View Filing Data

^[1],[2]

$ 88,265,649

$ 88,992,822

ALAMO GROUP INC. [Member]

^[1],[2],[3]

$ 574,186,572

$ 558,546,332

Seguin, Texas

Tractor-mounted mowing and mobile excavation equipment for governmental, industrial and agricultural markets; street-sweeping equipment for municipalities.

^{[1],[2],[4],[5],[6]}

22.00%

^{[1],[2],[4],[5],[7],[8]}

2,832,300 shares common stock (acquired 4-1-73 thru 5-09-11)

^{[1],[2],[4],[5]}

$ 2,190,937

ATLANTIC CAPITAL BANCSHARES, INC. [Member]

^{[1],[2],[3],[4],[5]}

$ 108,278,100

$ 85,138,938

Atlanta, Georgia

Holding company of Atlantic Capital Bank, a full service commercial bank.

^[1],[2],[6]

1.90%

^[1],[2],[7]

300,000 shares common stock (acquired 4-10-07)

^[1],[2]

$ 3,000,000

^[1],[2],[3]

$ 2,950,000

$ 2,299,000

BALCO, INC. [Member]

Wichita, Kansas

Specialty architectural products used in the construction and remodeling of commercial and institutional buildings.

^{[1],[2],[6],[9]}

95.70%

^{[1],[2],[7],[9]}

445,000 shares common stock and 60,920 shares Class B non-voting common stock (acquired 10-25-83 and 5-30-02)

^[1],[2],[9]

$ 624,920

BOXX TECHNOLOGIES, INC. [Member]

^{[1],[2],[3],[9]}

$ 4,500,000

$ 4,100,000

Austin, Texas

Workstations for computer graphic imaging and design.

^{[1],[2],[4],[6]}

14.90%

^{[1],[2],[4],[7]}

3,125,354 shares Series B Convertible Preferred Stock, convertible into 3,125,354 shares of common stock at $0.50 per share (acquired 8-20-99 thru 8-8-01)

^[1],[2],[4]

$ 1,500,000

CINATRA CLEAN TECHNOLOGIES, INC. [Member]

^{[1],[2],[3],[4]}

1,240,000

600,000

^[1],[2]

14,322,885

13,563,842

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 1,171,001

$ 6,002,348

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[6]

73.40%

^[1],[2],[7]

12% subordinated secured promissory note, due 5-9-16 (acquired 5-19-10 thru 10-20-10)

^[1],[2]

$ 779,278

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 2 [Member]

^[1],[2],[3]

$ 81,000

$ 444,189

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[7]

12% subordinated secured promissory note, due 5-9-17 (acquired 5-9-11 thru 10-26-11)

^[1],[2]

$ 2,285,700

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 3 [Member]

^[1],[2],[3]

$ 237,000

$ 1,302,849

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[7]

12% subordinated secured promissory note, due 3-31-17 (acquired 9-9-11 and 10-26-11)

12% subordinated secured promissory note, due 8-31-16 (acquired 9-9-11 and 10-26-11)

^[1],[2]

$ 1,523,800

$ 1,264,754

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 4 [Member]

^[1],[2],[3]

$ 158,000

$ 720,910

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[7]

10% subordinated secured promissory note, due 5-9-17 (acquired 7-14-08 thru 4-28-10)

^[1],[2]

$ 6,200,700

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 5 [Member]

^[1],[2],[3]

$ 643,000

$ 3,534,399

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[7]

12% subordinated secured promissory note, due 10-31-17 (acquired 10-19-12)

3,033,410 shares Series A Convertible Preferred Stock, convertible into 3,033,410 shares common stock at $1.00 per share (acquired 7-14-08 thru 11-18-10)

^[1],[2]

$ 499,997

$ 3,033,410

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 6 [Member]

^[1],[2],[3]

$ 52,000

$ 1

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[7]

3,033,410 shares Series A Convertible Preferred Stock, convertible into 3,033,410 shares common stock at $1.00 per share (acquired 7-14-08 thru 11-18-10)

Warrants to purchase 1,269,833 shares of common stock at $1.00 per share, expiring 8-31-21 (acquired 5-9-11 thru 8-31-11)

^[1],[2]

$ 3,033,410

$ 0

CINATRA CLEAN TECHNOLOGIES, INC. [Member] | Investment Type 7 [Member]

^[1],[2],[3]

$ 1

$ 0

Houston, Texas

Cleans above ground oil storage tanks with a patented, automated system.

^[1],[2],[7]

Warrants to purchase 1,436,499 shares of common stock at $1.00 per share, expiring 10-31-2027 (acquired 5-9-11 thru 10-19-12)

^[1],[2]

$ 0

ENCORE WIRE CORPORATION [Member]

^[1],[2],[3]

$ 0

McKinney, Texas

Electric wire and cable for residential, commercial and industrial construction use.

^{[1],[2],[4],[5],[6]}

6.20%

16.90%

^{[1],[2],[4],[5],[7],[8]}

1,312,500 shares common stock (acquired 9-10-92 thru 10-15-98)

4,086,750 shares common stock (acquired 7-16-92 thru 10-7-98)

^{[1],[2],[4],[5]}

$ 5,200,000

$ 5,800,000

EXTREME INTERNATIONAL, INC. [Member]

^{[1],[2],[3],[4],[5]}

$ 45,950,625

121,458,210

^[1],[2]

3,325,875

EXTREME INTERNATIONAL, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 10,162,000

Sugar Land, Texas

Owns Bill Young Productions, Texas Video and Post, and Extreme and television commercials and corporate communications videos.

^[1],[2],[6]

53.60%

^[1],[2],[7]

13,035 shares Series A Common Stock (acquired 9-26-08 and 12-18-08)

^[1],[2]

$ 325,875

EXTREME INTERNATIONAL, INC. [Member] | Investment Type 2 [Member]

^[1],[2],[3]

$ 714,000

Sugar Land, Texas

Owns Bill Young Productions, Texas Video and Post, and Extreme and television commercials and corporate communications videos.

^[1],[2],[7]

39,359.18 shares Series C Convertible Preferred Stock, convertible into 157,437.72 shares of common stock at $25.00 per share (acquired 9-30-03)

^[1],[2]

$ 2,625,000

EXTREME INTERNATIONAL, INC. [Member] | Investment Type 3 [Member]

^[1],[2],[3]

$ 8,626,000

Sugar Land, Texas

Owns Bill Young Productions, Texas Video and Post, and Extreme and television commercials and corporate communications videos.

^[1],[2],[7]

3,750 shares 8% Series A Convertible Preferred Stock, convertible into 15,000 shares of common stock at $25.00 per share (acquired 9-30-03)

^[1],[2]

$ 375,000

^[1],[2],[3]

$ 822,000

HEELYS, INC. [Member]

Carrollton, Texas

Heelys stealth skate shoes, equipment and apparel sold through sporting goods chains, department stores and footwear retailers.

^{[1],[2],[5],[6],[9]}

31.10%

^{[1],[2],[5],[7],[8],[9]}

9,317,310 shares common stock (acquired 5-26-00)

^{[1],[2],[5],[9]}

$ 102,490

^{[1],[2],[3],[5],[9]}

$ 20,498,082

HOLOGIC, INC. [Member]

Bedford, Massachusetts

Medical instruments including bone densitometers, mammography devices and digital radiography systems.

Bedford, Massachusetts Medical instruments including bone densitometers, mammography devices and digital radiography systems.

^{[1],[2],[5],[6]}

1.00%

^{[1],[2],[5],[7]}

582,820 shares common stock (acquired 8-27-99)

632,820 shares common stock (acquired 8-27-99)

^[8]

^[1],[2],[5]

$ 202,529

$ 220,000

^{[1],[2],[3],[5]}

13,165,904

13,637,271

iMEMORIES, INC. [Member]

^[1],[2]

5,826,479

5,078,479

iMEMORIES, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 5,826,479

$ 5,078,479

Scottsdale, Arizona

Enables online video and photo sharing and DVD creation for home movies recorded in analog and new digital format.

^[1],[2],[6]

23.00%

25.30%

^[1],[2],[7]

17,391,304 shares Series B Convertible Preferred Stock, convertible into 19,891,304 shares of common stock at $0.23 per share (acquired 7-10-09)

^[1],[2]

$ 4,000,000

iMEMORIES, INC. [Member] | Investment Type 2 [Member]

^[1],[2],[3]

$ 4,000,000

Scottsdale, Arizona

Enables online video and photo sharing and DVD creation for home movies recorded in analog and new digital format.

^[1],[2],[7]

4,684,967 shares Series C Convertible Preferred Stock, convertible into 4,684,967 shares of common stock at $0.23 per share (acquired 7-20-11)

^[1],[2]

$ 1,078,479

iMEMORIES, INC. [Member] | Investment Type 3 [Member]

^[1],[2],[3]

$ 1,078,479

Scottsdale, Arizona

Enables online video and photo sharing and DVD creation for home movies recorded in analog and new digital format.

^[1],[2]

Enables online video and photo sharing and DVD creation for home movies recorded in analog and new digital format.

^[1],[2],[7]

Warrants to purchase 2,500,000 shares of common stock at $0.12 per share, expiring 1-21-21(acquired 9-13-10 thru 1-21-11)

^[1],[2]

$ 0

iMEMORIES, INC. [Member] | Investment Type 4 [Member]

^[1],[2],[3]

$ 0

Scottsdale, Arizona

Enables online video and photo sharing and DVD creation for home movies recorded in analog and new digital format.

^[1],[2],[7]

10% convertible notes, $308,000 principal due 7-31-14 (acquired 9-7-12)

^[1],[2]

$ 308,000

iMEMORIES, INC. [Member] | Investment Type 5 [Member]

^[1],[2],[3]

$ 308,000

Scottsdale, Arizona

Enables online video and photo sharing and DVD creation for home movies recorded in analog and new digital format.

^[1],[2],[7]

10% convertible notes, $400,000 principal due 7-31-14 (acquired 3-15-13

^[1],[2]

$ 440,000

INSTAWARES HOLDING COMPANY, LLC [Member]

^[1],[2],[3]

$ 440,000

Atlanta, Georgia

Provides services to the restaurant industry via its five subsidiary companies.

^[1],[2],[6]

4.50%

^[1],[2],[7]

3,846,154 Class D shares (acquired 5-20-11)

^[1],[2]

$ 5,000,000

KBI BIOPHARMA, INC. [Member]

^[1],[2],[3]

$ 5,975,000

$ 5,000,000

Durham, North Carolina

Provides fully-integrated, outsourced drug development and bio-manufacturing services.

^[1],[2],[6]

17.10%

^[1],[2],[7]

7,142,857 shares Series B-2 Convertible Preferred Stock, convertible into 10,204,082 shares of common stock at $0.49 per share (acquired 9-08-09)

^[1],[2]

$ 5,000,000

KBI BIOPHARMA, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 5,200,000

3,200,000

^[1],[2],[6]

17.10%

^[1],[2],[7]

10,204,082 shares Series B-2 Convertible Preferred Stock, convertible into 10,204,802 shares of common stock at $0.49 per share (acquired 9-08-09)

^[1],[2]

$ 5,000,000

KBI BIOPHARMA, INC. [Member] | Investment Type 2 [Member]

^[1],[2],[3]

$ 5,200,000

^[1],[2],[7]

Warrants to purchase 94,510 shares of preferred stock at $ 0.70 per share, acquired 1-26-12

^[1],[2]

$ 0

MEDIA RECOVERY, INC. [Member]

^[1],[2],[3]

$ 0

Dallas, Texas

Computer datacenter and office automation supplies and accessories; impact, tilt monitoring and temperature sensing devices to detect mishandling shipments; dunnage for protecting shipments.

^[1],[2]

$ 5,415,000

5,415,000

^[9]

MEDIA RECOVERY, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 11,900,000

$ 18,700,000

^[9]

Dallas, Texas

Computer datacenter and office automation supplies and accessories; impact, tilt monitoring and temperature sensing devices to detect mishandling shipments; dunnage for protecting shipments.

^{[1],[2],[6],[9]}

97.90%

^{[1],[2],[7],[9]}

800,000 shares Series A Convertible Preferred Stock, convertible into 800,000 shares of common stock at $1.00 per share (acquired 11-4-97)

^[1],[2],[9]

$ 800,000

MEDIA RECOVERY, INC. [Member] | Investment Type 2 [Member]

^{[1],[2],[3],[9]}

$ 2,000,000

$ 3,100,000

Dallas, Texas

Computer datacenter and office automation supplies and accessories; impact, tilt monitoring and temperature sensing devices to detect mishandling shipments; dunnage for protecting shipments.

^[1],[2],[7]

4,000,002 shares common stock (acquired 11-4-97)

^[9]

^[1],[2]

$ 4,615,000

^[9]

^[1],[2],[3]

$ 9,900,000

$ 15,600,000

^[9]

PALLETONE, INC. [Member]

Bartow, Florida

Manufacturer of wooden pallets and pressure-treated lumber.

^[1],[2]

$ 1,703,150

^[4]

PALLETONE, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 1,900,002

$ 2,000,002

^[4]

^{[1],[2],[4],[6]}

7.70%

^{[1],[2],[4],[7]}

12.3% senior subordinated notes, $2,000,000 principal due 12-18-15 (acquired 9-25-06)

^[1],[2],[4]

$ 1,553,150

PALLETONE, INC. [Member] | Investment Type 2 [Member]

^{[1],[2],[3],[4]}

$ 1,900,000

$ 2,000,000

^[1],[2],[7]

150,000 shares common stock (acquired 10-18-01)

^[4]

^[1],[2]

$ 150,000

^[4]

THE RECTORSEAL CORPORATION [Member]

^[1],[2],[3]

$ 2

^[4]

Houston, Texas

Specialty chemicals for plumbing, HVAC, electrical, construction, industrial, oil field and automotive applications; smoke containment systems for building fires; also owns 20% of The Whitmore Manufacturing Company.

^{[1],[2],[6],[9]}

100.00%

^{[1],[2],[7],[9]}

27,907 shares common stock (acquired 1-5-73 and 3-31-73)

^[1],[2],[9]

$ 52,600

TCI HOLDINGS, INC. [Member]

^{[1],[2],[3],[9]}

$ 238,900,000

$ 166,300,000

Denver, Colorado

Cable television systems and microwave relay systems.

^[1],[2],[6]

0.00%

^[1],[2],[7]

21 shares 12% Series C Cumulative Compounding Preferred Stock (acquired 1-30-90)

^[1],[2]

$ 0

TITANLINER, INC. [Member]

^[1],[2],[3]

763,000

802,000

^[1],[2]

5,950,000

TITANLINER, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 5,950,000

Midland, Texas

Manufactures, installs and rents spill containment system for oilfield applications.

^[1],[2],[6]

29.90%

^[1],[2],[7]

217,038 shares Series A Convertible Preferred Stock convertible into 217,038 shares of Series A preferred stock at $14.76 per share (acquired 6-29-12)

^[1],[2]

$ 3,203,000

TITANLINER, INC. [Member] | Investment Type 2 [Member]

^[1],[2],[3]

$ 3,203,000

Midland, Texas

Manufactures, installs and rents spill containment system for oilfield applications.

^[1],[2],[7]

7% senior subordinated secured promissory note, due 6-30-17 (acquired 6-29-12)

^[1],[2]

$ 2,747,000

TITANLINER, INC. [Member] | Investment Type 3 [Member]

^[1],[2],[3]

$ 2,747,000

Midland, Texas

Manufactures, installs and rents spill containment system for oilfield applications.

^[1],[2],[7]

Warrants to purchase 122,239 shares of Series A preferred stock at $ 0.01 per share, expiring 12-31-22

^[1],[2]

$ 0

TRAX HOLDINGS, INC. [Member]

^[1],[2],[3]

^[1],[2]

9,000,000

8,200,000

TRAX HOLDINGS, INC. [Member] | Investment Type 1 [Member]

^[1],[2],[3]

$ 19,400,000

$ 9,800,000

Scottsdale, Arizona

Provides a comprehensive set of solutions to improve the transportation validation, accounting, payment and information management process.

^[1],[2],[6]

25.40%

29.40%

^[1],[2],[7]

475,430 shares Series B convertible Preferred Stock convertible into 475,430 common stock at $8.41 per share(acquired 12-5-12)

18% convertible promissory note, $3,200,000 principal due 9-17-2012 (acquired 4-6-11 thru 11-10-11)

^[1],[2]

$ 4,000,000

$ 3,200,000

TRAX HOLDINGS, INC. [Member] | Investment Type 2 [Member]

^[1],[2],[3]

$ 7,000,000

$ 3,200,000

Scottsdale, Arizona

Provides a comprehensive set of solutions to improve the transportation validation, accounting, payment and information management process.

^[1],[2],[7]

1,061,279 shares Series A Convertible Preferred Stock, convertible into 1,061,279 common stock at $4.71 per share (acquired 12-8-08 and 2-17-09)

1,061,279 shares Series A Convertible Preferred Stock, convertible into 1,061,279 common stock at $4.64 per share (acquired 12-8-08 and 2-17-09)

^[1],[2]

$ 5,000,000

VIA HOLDINGS, INC. [Member]

^[1],[2],[3]

$ 12,400,000

$ 6,600,000

Sparks, Nevada

Designer, manufacturer and distributor of high-quality office seating.

^[1],[2],[6]

3.20%

^[1],[2],[7]

12,686 shares common stock (acquired 3-4-11 and 3-25-11)

^[1],[2]

$ 4,926,290

^[1],[2],[3]

$ 2

WELLOGIX, INC. [Member]

Houston, Texas

Developer and supporter of software used by the oil and gas industry.

^{[1],[2],[4],[6]}

19.10%

^{[1],[2],[4],[7]}

4,788,371 shares Series A-1 Convertible Participating Preferred Stock, convertible into 4,788,371 shares of common stock at $1.0441 per share (acquired 8-19-05 thru 6-15-08)

^[1],[2],[4]

$ 5,000,000

THE WHITMORE MANUFACTURING COMPANY [Member]

^{[1],[2],[3],[4]}

$ 25,000

Rockwall, Texas

Specialized surface mining, railroad and industrial lubricants; coatings for automobiles and primary metals; fluid contamination control devices.

^{[1],[2],[6],[9]}

80.00%

^{[1],[2],[7],[9]}

80 shares common stock (acquired 8-31-79)

^[1],[2],[9]

$ 1,600,000

Ballast Point Ventures II, L.P. [Member]

^{[1],[2],[3],[9]}

$ 80,500,000

$ 67,200,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

Ballast Point Ventures II, L.P. 2.2% limited partnership interest (acquired 8-4-08 thru 2-15-13)

Ballast Point Ventures II, L.P. 2.2% limited partnership interest (acquired 8-4-08 thru 6-18-10)

^[1],[2]

$ 1,659,790

$ 1,725,000

BankCap Partners Fund I, L.P. [Member]

^[1],[2],[3]

$ 1,843,000

$ 1,551,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

BankCap Partners Fund I, L.P. 5.5% limited partnership interest (acquired 7-14-06 thru 11-16-12)

BankCap Partners Fund I, L.P. 5.5% limited partnership interest (acquired 7-14-06 thru 11-30-11)

^[1],[2]

$ 5,897,276

$ 5,808,470

CapitalSouth Partners Fund III, L.P. [Member]

^[1],[2],[3]

$ 5,013,000

$ 5,012,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

CapitalSouth Partners Fund III, L.P. 1.9% limited partnership interest (acquired 1-22-08 and 11-16-11)

^[1],[2]

$ 1,331,256

CapStar Holdings Corporation [Member]

^[1],[2],[3]

$ 3,934,000

$ 1,438,000

^[1],[2],[6]

100.00%

^{[1],[2],[7],[9]}

CapStar Holdings Corporation 500 shares common stock (acquired 6-10-10); 1,000,000 shares preferred stock (acquired 12-17-12)

CapStar Holdings Corporation 500 shares common stock (acquired 6-10-10)

^[1],[2]

$ 4,703,619

$ 3,703,619

Diamond State Ventures, L.P. [Member]

^[1],[2],[3]

$ 7,846,000

$ 5,338,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

Diamond State Ventures, L.P. 1.4% limited partnership interest (acquired 10-12-99 thru 8-26-05)

^[1],[2]

$ 0

$ 76,000

Discovery Alliance, LLC [Member]

^[1],[2],[3]

$ 120,000

$ 184,000

^[1],[2],[6]

0.00%

^{[1],[2],[7],[9]}

Discovery Alliance, LLC 90.0% limited liability company (acquired 9-12-08 thru 10-15-12)

Discovery Alliance, LLC 90.0% limited liability company (acquired 9-12-08 thru 10-20-11)

^[1],[2]

$ 1,315,000

$ 1,180,000

First Capital Group of Texas III, L.P. [Member]

^[1],[2],[3]

$ 956,000

$ 1,280,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

First Capital Group of Texas III, L.P. 3.0% limited partnership interest (acquired 12-26-00 thru 8-12-05)

^[1],[2]

$ 778,895

^[1],[2],[3]

$ 190,000

$ 662,000

Humac Company [Member]

^[1],[2],[6]

100.00%

^{[1],[2],[7],[9]}

Humac Company 1,041,000 shares common stock (acquired 1-31-75 and 12-31-75)

^[1],[2]

$ 0

North American Energy Partners, Inc.

^[1],[2],[3]

$ 188,000

$ 159,000

^[1],[2],[6]

0.00%

^{[1],[2],[5],[7]}

North American Energy Partners, Inc. 77,194 shares common stock (acquired 8-20-12)

^[1],[2]

$ 236,986

STARTech Seed Fund I [Member]

^[1],[2],[3]

$ 350,461

^[1],[2],[6]

0.00%

^[1],[2],[7]

STARTech Seed Fund I 12.1% limited partnership interest (acquired 4-17-98 thru 1-5-00)

^[1],[2]

$ 178,066

STARTech Seed Fund II [Member]

^[1],[2],[3]

$ 39,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

STARTech Seed Fund II 3.2% limited partnership interest (acquired 4-28-00 thru 2-23-05)

^[1],[2]

$ 754,327

$ 843,891

Sterling Group Partners I, L.P. [Member]

^[1],[2],[3]

$ 151,000

$ 371,000

^[1],[2],[6]

0.00%

^[1],[2],[7]

Sterling Group Partners I, L.P. 1.7% limited partnership interest (acquired 4-20-01 thru 1-24-05)

^[1],[2]

$ 1,064,042

ORGANIZATION AND BASIS OF PRESENTATION [Abstract]

^[1],[2],[3]

$ 511,000

[1]	Agreements between certain issuers and the Company provide that the issuer will bear substantially all costs in connection with the Company disposing such common stock, including those costs involved in registration under the Securities Act of 1933, but excluding underwriting discounts and commissions. These agreements cover common stock owned at March 31, 2013 and common stock which may be acquired thereafter through the exercise of warrants and conversion of debentures and preferred stock. They apply to restricted securities of all issuers in the investment portfolio of the Company except securities of the following issuers which are not obligated to bear registration costs: Humac Company and The Whitmore Manufacturing Company.
[2]	The descriptions of the companies and ownership percentages shown in the Consolidated Schedule of Investments were obtained from published reports and other sources believed to be reliable. Acquisition dates indicated are the dates specific securities were acquired, which may differ from the original investment dates. Certain securities were received in exchange for or upon conversion or exercise of other securities previously acquired.
[3]	Debt Securities are generally valued on the basis of the price the security would command in order to provide a yield-to-maturity equivalent to the present yield of comparable debt instruments of similar quality. Issuers whose debt securities are judged to be of poor quality and doubtful collectability may instead be valued by assigning percentage discounts commensurate with the quality of such debt securities. Debt securities may also be valued based on the resulting value from the sale of the business at the estimated fair market value. Partnership Interests, Preferred Equity and Common Equity, including unrestricted marketable securities, are valued at the closing sale price for the NYSE listed securities and the lower of the closing bid price or the last sale price for NASDAQ securities on the valuation date. For those without a principal market, our Board of Directors considers the financial condition and operating results of the issuer; the long-term potential of the business of the issuer; the market for and recent sales prices of the issuer's securities; the values of similar securities issued by companies in similar businesses; and the proportion of the issuer's securities owned by the Company. Investments in certain entities that calculate net asset value per share (or its equivalent) and for which fair market value is not readily determinable are valued using the net asset value per share (or its equivalent, such as member units or ownership interest in partners' capital to which a proportionate share of net assets is attributed) of the investment. Equity Warrants are valued on the basis of the Black-Scholes model which defines the market value of a warrant in relation to the market price of its common stock, share price volatility, and time to maturity.
[4]	Affiliated investment
[5]	Publicly-owned company
[6]	The percentages in the "Equity" column express equity interests held by Capital Southwest Corporation and Capital Southwest Venture Corporation (together, the "Company") in each issuer. Each percentage represents the amount of the issuer's common stock the Company owns or can acquire as a percentage of the issuer's total outstanding common stock, plus stock reserved for all warrants, convertible securities and employee stock options.
[7]	Unrestricted securities (indicated by ‡) are freely marketable securities having readily available market quotations. All other securities are restricted securities, which are subject to one or more restrictions on resale and are not freely marketable. At March 31, 2013, restricted securities represented approximately 70.8% of the value of the consolidated investment portfolio. Our investments are carried at fair value in accordance with the Investment Company Act of 1940 (the "1940 Act") and FASB Accounting Standards Codification (ASC) 820, Fair Value Measurements and Disclosures. In accordance with the 1940 Act, unrestricted minority-owned publicly traded securities, for which the market quotations are readily available, are valued at the closing sale price for the NYSE listed securities and the lower of the closing bid price or the last sale price for NASDAQ securities on the valuation date; other privately held securities are valued as determined in good faith by our Board of Directors. ASC 820 defines fair value in terms of the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the "exit price") and excludes transaction costs. Under ASC 820, the fair value measurement also assumes that the transaction to sell an asset occurs in the principal market for the asset or, in the absence of a principal market, the most advantageous market for the asset. The principal market is the market in which the reporting entity would sell or transfer the asset with the greatest volume and level of activity for the asset. In determining the principal market for an asset or liability under ASC 820, it is assumed that the reporting entity has access to the market as of the measurement date.
[8]	Unrestricted securities as defined in Note (b)
[9]	Control Investment

ORGANIZATION AND BASIS OF PRESENTATION

12 Months Ended

Mar. 31, 2013

ORGANIZATION AND BASIS OF PRESENTATION

1.	ORGANIZATION AND BASIS OF PRESENTATION

Organization

Capital Southwest Corporation ("CSW") was organized as a Texas corporation on April 19, 1961. Until September 1969, CSW operated as a licensee under the Small Business Investment Act of 1958. At that time, we transferred to our wholly-owned subsidiary, Capital Southwest Venture Corporation ("CSVC"), certain assets and our license as a small business investment company ("SBIC"). CSVC is a closed-end, non-diversified investment company registered under the Investment Company Act of 1940, as amended (the "1940 Act"). Prior to March 30, 1988, CSW was registered as a closed-end, non-diversified investment company under the 1940 Act. On that date, CSW elected to become a Business Development Company ("BDC") subject to the provisions of the 1940 Act, as amended by the Small Business Incentive Act of 1980. Because CSW wholly owns CSVC, the portfolios of both CSW and CSVC are referred to collectively as "our," "we" and "us." Capital Southwest Management Company ("CSMC"), a wholly-owned subsidiary of CSW, is the management company for CSW and CSVC. CSMC generally incurs all normal operating and administrative expenses, including, but not limited to, salaries and related benefits, rent, equipment and other administrative costs required for its day-to-day operations.

Our portfolio is a composite of companies, consisting of companies in which we have controlling interests, developing companies and marketable securities of established publicly traded companies. We make available significant managerial assistance to the companies in which we invest and believe that providing managerial assistance to such investee companies is critical to their business development activities. CSMC receives a monthly fixed fee for management services provided to certain of its control portfolio companies.

Basis of Presentation

The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). Under rules and regulations applicable to investment companies, we are precluded from consolidating any entity other than another investment company. An exception to this general principle occurs if the investment company has an investment in an operating company that provides services to the investment company. Accordingly, consolidated financial statements include CSMC, our management company.

Portfolio Investment Classification

We classify our investments in accordance with the requirements of the 1940 Act. Under the 1940 Act, "Control Investments" are defined as investments in which we own more than 25% of the voting securities or have rights to maintain greater than 50% of the board representation; "Affiliated Investments" are defined as investments in which we own between 5% and 25% of the voting securities; and "Non-Control/Non-Affiliated Investments" are defined as investments that are neither "Control Investments" nor "Affiliated Investments."

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Mar. 31, 2013

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

2.	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The following is a summary of significant accounting policies followed in the preparation of the consolidated financial statements of CSW, CSVC and CSMC.

Fair Value Measurements We adopted FASB ASC Topic 820 on April 1, 2008. ASC Topic 820 (1) creates a single definition of fair value, (2) establishes a framework for measuring fair value, and (3) expands disclosure requirements about items measured at fair value. The Statement applies to both items recognized and reported at fair value in the financial statements and items disclosed at fair value in the notes to the financial statements. The Statement does not change existing accounting rules governing what can or what must be recognized and reported at fair value in our financial statements, or disclosed at fair value in our notes to financial statements. Additionally, ASC Topic 820 does not eliminate practicability exceptions that exist in accounting pronouncements amended by this Statement when measuring fair value.

Fair value is generally determined based on quoted market prices in the active markets for identical assets or liabilities. If quoted market prices are not available, we use valuation techniques that place greater reliance on observable inputs and less reliance on unobservable inputs. Due to the inherent uncertainty in the valuation process, our estimate of fair value may differ materially from the values that would have been used had a ready market for the securities existed. In addition, changes in the market environment, portfolio company performance and other events may occur over the lives of the investments that may cause the gains or losses ultimately realized on these investments to be materially different than the valuations currently assigned. We determine the fair value of each individual investment and record changes in fair value as unrealized appreciation or depreciation.

Pursuant to our internal valuation process, each portfolio company is valued once a quarter. In addition to our internal valuation process, our Board of Directors retains a nationally recognized firm to provide limited scope third party valuation services on certain portfolio investments. Our Board of Directors retained Duff & Phelps to provide limited scope third party valuation services on three investments comprising 57.7% of our net asset value at March 31, 2013.

We believe our investments at March 31, 2013 and March 31, 2012 approximate fair value as of those dates based on the market in which we operate and other conditions in existence at those reporting periods.

Investments Investments are stated at fair value determined by our Board of Directors as described in Notes to the Consolidated Schedule of Investments and Note 3 below. The average cost method is used in determining cost of investments sold. Investments are recorded on a trade date basis.

Cash and Cash Equivalents Cash and cash equivalents consist of highly liquid investments with an original maturity of three months or less at the date of purchase. Cash and cash equivalents are carried at cost, which approximates fair value.

Segment Information We operate and manage our business in a singular segment. As an investment company, we invest in portfolio companies in various industries and geographic areas as presented in the Consolidated Schedule of Investments.

Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Interest and Dividend Income Interest and dividend income is recorded on an accrual basis to the extent amounts are expected to be collected. Dividend income is recorded at the ex-dividend date for marketable securities and restricted securities. In accordance with our valuation policy, accrued interest and dividend income is evaluated periodically for collectability. When a debt or loan becomes 90 days or more past due, and if we otherwise do not expect the debtor to be able to service all of its debt or other obligations, we will generally establish a reserve against the interest income, thereby placing the loan or debt security's status on non-accrual basis, and cease to recognize interest income on that loan or debt security until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a loan or debt security's status significantly improves regarding ability to service debt or other obligations, it will be restored to accrual basis.

Federal Income Taxes CSW and CSVC have elected and intend to comply with the requirements of the Internal Revenue Code (IRC) necessary to qualify as regulated investment companies (RICs). By meeting these requirements, they will not be subject to corporate federal income taxes on ordinary income distributed to shareholders. In order to comply as a RIC, each company is required to timely distribute to its shareholders at least 90% of investment company taxable income, as defined by the IRC, each year. Investment company taxable income generally differs from net income for financial reporting purposes due to temporary and permanent differences in the recognition of income and expenses. Investment company taxable income generally excludes net unrealized appreciation or depreciation, as investment gains and losses are not included in investment company taxable income until they are realized.

In addition to the requirement that we must annually distribute at least 90% of our investment company taxable income, we may either distribute or retain our realized net capital gains from investments, but any net capital gains not distributed may be subject to corporate level tax. Historically, we have not distributed net capital gains; however, during the twelve months ended March 31, 2013, we distributed capital gains dividends in the amount of $20.34 per share to our shareholders. When we retain the capital gains, they are classified as a "deemed distribution" to our shareholders and are subject to our corporate tax rate of 35%. As an investment company that qualifies as a RIC under the IRC, federal income taxes payable on security gains that we elect to retain are accrued only on the last day of our tax year, December 31. Any capital gains actually distributed to shareholders are generally taxable to the shareholders as long-term capital gains. See Note 4 for further discussion.

CSMC, a wholly owned subsidiary of CSW, is not a RIC and is required to pay taxes at the current corporate rate.

We account for interest and penalties as part of operating expenses. There were no interest or penalties incurred during the years ended March 31, 2013, 2012 and 2011.

Deferred Taxes CSMC sponsors a qualified defined benefit pension plan which covers its employees and employees of certain of its controlled affiliates. Deferred taxes related to the qualified defined benefit pension plan are recorded as incurred.

Stock-Based Compensation We account for our stock-based compensation using the fair value method, as prescribed by ASC 718, Compensation – Stock Compensation. Accordingly, we recognize stock-based compensation cost over the straight-line method for all share-based payments awards granted to employees. The fair value of stock options are determined on the date of grant using the Black-Scholes pricing model and are expensed over the vesting period of the related stock options. For restricted stock awards, we measured the grant date fair value based upon the market price of our common stock on the date of the grant and will amortize this fair value to shared-based compensation expense over the vesting term. For phantom stock options, the option value of phantom stock awards is calculated based on the net asset value of the Corporation. We value the plan each quarter and either increase or decrease the liability based on the phantom option value. See Note 6 for further discussion.

Defined Pension Benefits and Other Postretirement Plans We record annual amounts relating to the defined benefit pension plan based on calculations, which include various actuarial assumptions such as discount rates and assumed rates of return depending on the pension plan. Material changes in pension costs could occur to changes in the discount rate, changes in the expected long-term rate of return, changes in level of contributions to the plans and other factors. The funded status is the difference between the fair value of plan assets and the benefit obligation. We recognize changes in the funded status of defined benefit plan in the Statement of Assets and Liabilities in the year in which the changes occur and measure defined benefit plan assets and obligations as of the date of the employer's fiscal year-end. We presently use March 31 as the measurement date for our defined benefit plan.

Concentration of Risk We place our idle cash in financial institutions, and at times, such balances may be in excess of the federally insured limits.

Recent Accounting Pronouncements

In May 2011, the FASB issued Accounting Standards Update ("ASU") 2011-04, Fair Value Measurements (ASC 820), Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs ("ASU 2011-04"). ASU 2011-04 results in common fair value measurement and disclosure requirements in U.S. GAAP and IFRSs. ASU 2011-04 is effective for interim and annual reporting periods beginning after December 15, 2011. The adoption of ASU 2011-04 did not have a significant impact on our financial condition and results of operations. See Note 3 Investments, for further information regarding valuation techniques and quantitative information about the significant unobservable inputs utilized by our Company to value Level 3 investments.

INVESTMENTS

12 Months Ended

Mar. 31, 2013

INVESTMENTS [Abstract]

INVESTMENTS

3.	INVESTMENTS

We record our investments at fair value as determined in good faith by our Board of Directors in accordance with GAAP. When available, we base the fair value of our investments on directly observable market prices or on market data derived for comparable assets. For all other investments, inputs used to measure fair value reflect management's best estimate of assumptions that would be used by market participants in pricing the investments in a hypothetical transaction.

The levels of fair value inputs used to measure our investments are characterized in accordance with the fair value hierarchy established by ASC. We use judgment and consider factors specific to the investment in determining the significance of an input to a fair value measurement. While management believes our valuation methodologies are appropriate and consistent with market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. The three levels of the fair value hierarchy and investments that fall into each of the levels are described below:

Level 1: Investments whose values are based on unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access. We use Level 1 inputs for publicly traded unrestricted securities. Such investments are valued at the closing price for listed securities and at the lower of the closing bid price or the closing sale price for NASDAQ securities on the valuation date.

Level 2: Investments whose values are based on observable inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These inputs may include quoted prices for the identical instrument in non-active markets, quoted prices for similar instruments in active markets and similar data. We did not value any of our investments using Level 2 inputs as of March 31, 2013 and 2012.

Level 3: Investments whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. These inputs reflect management's own assumptions about the assumptions a market participant would use in pricing the investment. We used Level 3 inputs for measuring the fair value of approximately 70.8% of our investments as of March 31, 2013. See "Notes to Consolidated Schedule of Investments" (c) on page 47 for the investment policy used to determine the fair value of these investments.

As required by ASC 820, when the inputs used to measure fair value fall within different levels of the hierarchy, the level within the fair value measurement is categorized based on the lowest level input that is significant to the fair value measurement which may include inputs that are observable (Levels 1 and 2) and unobservable (Level 3). Therefore, gains and losses for such investments categorized within the Level 3 table below may include changes in fair value that are attributable to both observable inputs (Levels 1 and 2) and unobservable (Level 3). We conduct reviews of fair value hierarchy classifications on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of certain investments.

Unobservable inputs are those inputs for which little or no market data exists and, therefore, require an entity to develop its own assumptions. The fair value determination of each portfolio company requires one or more of the following unobservable inputs:

Financial information obtained from each portfolio company, including audited and unaudited statements of operations and balance sheets for the most recent period available as compared to budgeted numbers;

Current and projected financial condition of the portfolio company;

Current and projected ability of the portfolio company to service its debt obligations;

Projected operating results of the portfolio company;

Current information regarding any offers to purchase the investment or recent private sales transactions;

Current ability of the portfolio company to raise any additional financing as needed;

Change in the economic environment which may have a material impact on the operating results of the portfolio company;

Qualitative assessment of key management;

Contractual rights, obligations or restrictions associated with the investment; and

Other factors deemed relevant.

Preferred Stock and Common Stock

The significant unobservable inputs used in the fair value measurement of our equity securities are EBITDA multiples, revenue multiples, net book values, tangible book value multiples, and the weighted average costs of capital ("WACC"). Generally, increases or decreases in EBITDA or revenue multiple inputs result in a higher or lower fair value measurement, respectively. Generally, increases or decreases in WACC result in a lower or higher fair value measurement, respectively. However, due to the nature of certain investments, fair value measurements may be based on other criteria, such as third party-appraisals. For recent investments, we generally rely on our cost basis to determine the fair value unless fair value is deemed to have departed from this level.

Debt Securities

The significant unobservable inputs used in the fair value measurement of our debt securities are risk adjusted discount factors used in the yield valuation technique and probability of principal recovery. Significant increase or decrease in any of these valuation inputs in isolation would result in a significantly lower or higher fair value measurement. However, due to the nature of certain investments, fair value measurements may be based on other criteria, such as third party inputs.

Limited Partnership or Limited Liability Company Interests

For recent investments, we generally evaluate limited partnership or limited liability company interests at cost, which is deemed to represent market value, unless or until there is substantive evidence that cost does not correspond to fair value. Thereafter, these securities are generally valued at our percentage interest of the fund or company's calculated net asset value, unless there is substantive evidence that the net asset value does not correspond to fair value. All investments of each fund are valued by each fund in accordance with ASC 820.

Warrants

We generally use the Black-Scholes option pricing model to determine the fair value of warrants held in our portfolio. Option pricing models, including the Black-Scholes model, require the use of subjective inputs, including expected volatility, expected life, expected dividend rate, and expected risk-free rate of return. In the Black-Scholes model, variation in the expected volatility or expected term assumptions has a significant impact on fair value.

The table below presents the valuation technique and quantitative information about the significant unobservable inputs utilized by the Company to value our Level 3 investments as of March 31, 2013 and March 31, 2012. Unobservable inputs are those inputs for which little or no market data exists and therefore require an entity to develop its own assumptions. The table is not intended to be all inclusive, but instead captures the significant unobservable inputs relevant to our determination of fair value.

Type	Valuation Technique	Fair Value at 3/31/2013 (in millions)		Unobservable Input	Range			Weighted Average
Preferred & Common Equity	Market Approach	$	342.2	EBITDA Multiple		3.25x – 7.00x			6.45	x
	Market Approach	$	11.1	Revenue Multiple		0.25x – 1.82x			0.97	x
	Market Approach	$	7.9	Cash and Asset Value	NA			NA
	Discounted Cash Flow	$	0.7	Discount Rate		1.75	%		1.75	%
	Market Approach	$	3.0	Multiple of Tangible Book Value		1.22	x		1.22	x
	Market Approach	$	22.6	Recent Transaction Price	NA			NA
	Market Approach	$	0.2	Market Value of Held Securities	NA			NA
		$	387.7
Debt	Discounted Cash Flow	$	3.1	Discount Rate		10.02% -12.00	%		10.77	%
	Recent Transaction Price	$	3.5	Recent Transaction Price	NA			NA
		$	6.6
Partnership Interests	Net Asset Value*	$	12.2	Fund Value	NA			NA
	Total	$	406.5

Type	Valuation Technique	Fair Value at 3/31/2012 (in millions)		Unobservable Input	Range			Weighted Average
Preferred & Common Equity	Market Approach	$	270.2	EBITDA Multiple		3.25x - 6.50x			5.71	x
	Market Approach	$	11.7	Revenue Multiple		1.10x – 1.97x			1.48	x
	Market Approach	$	5.5	Cash and Asset Value	NA			NA
	Discounted Cash Flow	$	0.8	Discount Rate		3.56	%		3.56	%
	Market Approach	$	2.3	Multiple of Tangible Book Value		1.00	x		1.00	x
	Market Approach	$	5.0	Recent Transaction Price	NA			NA
	Market Approach	$	0.1	Market Value of Held Securities	NA			NA
		$	295.6
Debt	Discounted Cash Flow	$	8.0	Discount Rate		10.31%-16.22	%		14.74	%
	Recent Transaction Price	$	3.2	Recent Transaction Price	NA			NA
		$	11.2
Partnership Interests	Net Asset Value*	$	11.0	Fund Value	NA			NA
	Total	$	317.8

As of March 31, 2013 and 2012, 70.8% and 56.9%, respectively, of our portfolio investments were categorized as Level 3.

The following fair value hierarchy tables set forth our investment portfolio by level as of March 31, 2013 and March 31, 2012 (in millions):

			Fair Value Measurements at 3/31/13 Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Debt	$	6.6	$	−	$	−	$	6.6
Partnership Interests		12.2		−		−		12.2
Preferred Equity		44.6		−		−		44.6
Common Equity		510.8		167.7		−		343.1
Total Investments	$	574.2	$	167.7	$	−	$	406.5

			Fair Value Measurements at 3/31/12 Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Debt	$	11.2	$	−	$	−	$	11.2
Partnership Interests		11.0		−		−		11.0
Preferred Equity		33.9		−		−		33.9
Common Equity		502.4		240.7		−		261.7
Total Investments	$	558.5	$	240.7	$	−	$	317.8

Changes in Fair Value Levels

We monitor the availability of observable market data to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model based valuation techniques may require the transfer of financial instruments from one fair value to another.

The following table provides a summary of changes in the fair value of investments measured using Level 3 inputs during the years ended March 31, 2013 and 2012 (in millions):

	Fair Value 3/31/12		Net Unrealized Appreciation (Depreciation)			New Investments		Divestitures			Net Changes from Unrealized to Realized			Conversion of Security from Debt to Equity			Transfer out of Level 3		Fair Value at 3/31/13
Debt	$	11.2	$	(5.4	)	$	4.0	$	−		$	−		$	(3.2	)	$	−	$	6.6
Partnership Interest		11.0		1.5			0.5		−			(0.8	)		−			−		12.2
Preferred Equity		33.9		12.3			−		(9.8	)		5			3.2			−		44.6
Common Equity		261.7		82.1			−		−			(0.7	)		−			−		343.1
Total Investments	$	317.8	$	90.5		$	4.5	$	(9.8	)	$	3.5		$	−		$	−	$	406.5

	Fair Value 3/31/11		Net Unrealized Appreciation (Depreciation)			New Investments		Divestitures			Net Changes from Unrealized to Realized			Conversion of Security from Debt to Equity		Transfer out of Level 3		Fair Value at 3/31/12
Debt	$	12.7	$	(4.6	)	$	6.6	$	(1.0	)	$	(2.5	)		−	$	−	$	11.2
Partnership Interest		9.5		0.2			1.3		−			−			−		−		11.0
Preferred Equity		45.8		(2.9	)		6.3		(6.1	)		(9.2	)		−		−		33.9
Common Equity		394.5		87.0			0.0		−			7.3			−		227.1		261.7
Total Investments	$	462.5	$	79.7		$	14.2	$	(7.1	)	$	(4.4	)		−	$	227.1	$	317.8

The total unrealized gains included in earnings that related to assets still held at the report date for the years ended March 31, 2013 and 2012 were $120,777,969 and $96,949,860, respectively.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13504-108611

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

INCOME TAXES

12 Months Ended

Mar. 31, 2013

INCOME TAXES [Abstract]

INCOME TAXES

4.	INCOME TAXES

We operate to qualify as a RIC under Subchapter M of the IRC and have a calendar tax year end of December 31. In order to qualify as a RIC, we must annually distribute at least 90% of our investment company taxable ordinary income, based on our tax year, to our shareholders in a timely manner. Investment company ordinary income includes net short-term capital gains but excludes net long-term capital gains. A RIC is not subject to federal income tax on the portion of its ordinary income and long-term capital gains that are distributed to its shareholders, including "deemed distributions" discussed below. As permitted by the Code, a RIC can designate dividends paid in the subsequent tax year as dividends of current year ordinary income and net long-term gains if those dividends are both declared by the extended due date of the RIC's federal income tax return and paid to shareholders by the last day of the subsequent tax year.

We have distributed or intend to distribute sufficient dividends to eliminate taxable income for our completed tax years. If we fail to satisfy the 90% distribution requirement or otherwise fail to qualify as a RIC in any tax year, we would be subject to tax in such year on all of our taxable income, regardless of whether we made any distributions to our shareholders. For the tax years ended December 31, 2012 and 2011, we declared and paid ordinary dividends in the amounts of $3,025,032 and $3,003,030, respectively.

Additionally, we are subject to a nondeductible federal excise tax of 4% if we do not distribute at least 98% of our investment company ordinary taxable income before the end of our tax year. For the tax years ended December 31, 2012 and 2011, we distributed 100% of our investment company ordinary taxable income. As a result, we have made no tax provisions for income taxes on ordinary taxable income for the tax years ended December 31, 2012 and 2011.

A RIC may elect to retain its long-term capital gains by designating them as "deemed distribution" to its shareholders and paying a federal tax rate of 35% on the long-term capital gains for the benefit of its shareholders. Shareholders then report their share of the retained capital gains on their income tax returns as if it had been received and report a tax credit for tax paid on their behalf by the RIC. Shareholders then add the amount of the "deemed distribution" net of such tax, to the basis of their shares.

Historically, we have not distributed net capital gains; however, during the tax year ended December 31, 2012, we distributed capital gains dividends in the amount of $17.59 per share to our shareholders. For the tax year ended December 31, 2012, we had net long-term capital gains of $3,214,547 for tax purposes and $2,319,012 for book purposes, which we elected to retain and treat as deemed distributions to our shareholders. For the tax year ended December 31, 2011, we had net long-term capital gains of $3,568,376 for tax purposes and $4,465,088 for book purposes, which we elected to retain and treat as deemed distributions to our shareholders.

In order to make the election to retain capital gains, we incurred federal taxes on behalf of our shareholders in the amount of $1,125,092 for the tax year ended December 31, 2012. For the tax year ended December 31, 2011, we incurred federal taxes on behalf of our shareholders in the amount of $1,248,932.

The following table sets forth a summary of our net realized gains on transactions by category:

Net Realized Gains on Transactions In	For the Tax Year Ended December 31
Investment Securities of	2012			2011
Control Investments	$	−		$	−
Affiliated Investments		66,037,485			−
Non-Control/Non-Affiliated Investments		3,107,309			4,465,088
Net realized gain on investments	$	69,144,794		$	4,465,088
Capital gain distribution		(66,825,782	)		−
Income tax expense		1,125,092			1,248,932
Net realized gains on investments	$	1,193,920		$	3,216,156
Net realized gains on investment (for tax purposes)	$	3,214,547		$	3,568,376

For the years ended March 31, 2013, 2012 and 2011, CSW and CSVC qualified to be taxed as RICs. We intend to meet the applicable qualifications to be taxed as a RIC in future years. Management feels it is probable that we will maintain our RIC status for a period longer than one year. However, either company's ability to meet certain portfolio diversification requirements of RICs in future years may not be controllable by such company.

CSMC, a wholly owned subsidiary of CSW, is not a RIC and is required to pay taxes at the current corporate rate. CSMC sponsors a qualified defined benefit pension plan which covers its employees and employees of certain of its wholly owned portfolio companies. Deferred taxes related to the qualified defined pension plan are recorded as incurred.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS [Abstract]

ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS

12 Months Ended

Mar. 31, 2013

ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS

5.	ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS

Distributions made by RICs often differ from aggregate GAAP-basis undistributed net investment income and accumulated net realized gains (total GAAP-basis net realized gains). The principal cause is that required minimum fund distributions are based on income and gain amounts determined in accordance with federal income tax regulations, rather than GAAP. The differences created can be temporary, meaning that they will reverse in the future, or they can be permanent. In subsequent periods, when all or a portion of a temporary difference becomes a permanent difference, the amount of the permanent difference will be reclassified to "additional capital."

We incur federal taxes on behalf of our shareholders as a result of our election to retain long-term capital gains. Historically, we have not distributed net capital gains; however, during the twelve months ended March 31, 2013, we distributed capital gains dividends in the amount of $20.34 per share to our shareholders. As of March 31, 2013 we had accumulated long-term capital gains of $10,436,526. As of March 31, 2012 we had accumulated long-term capital gains of $498,438.

EMPLOYEE STOCK BASED COMPENSATION PLANS

12 Months Ended

Mar. 31, 2013

EMPLOYEE STOCK BASED COMPENSATION PLANS [Abstract]

EMPLOYEE STOCK BASED COMPENSATION PLANS

6.	EMPLOYEE STOCK BASED COMPENSATION PLANS

Stock Options

On July 20, 2009, shareholders approved our 2009 Stock Incentive Plan (the "2009 Plan"), which provides for the granting of stock options to employees and officers and authorizes the issuance of common stock upon exercise of such options for up to 140,000 shares. All options are granted at or above market price, generally expire up to ten years from the date of grant and are generally exercisable on or after the first anniversary of the date of grant in five annual installments. Options to purchase 38,750 shares at a price of $76.74 (market price at the time of the grant) were granted on October 19, 2009. Additionally, options to purchase 20,000 shares at a price of $95.79 (market price at time of the grant) were granted on March 22, 2010, options to purchase 15,000 shares at a price of $88.20 were granted on July 19, 2010 and options to purchase 10,000 shares at a price of $96.92 were granted on July 18, 2011. During the twelve months ended March 31, 2013, 27,023 options were exercised and 14,000 options were forfeited, thus leaving 42,727 options outstanding and 70,250 options available to grant under the 2009 Plan.

We previously granted stock options under its 1999 Stock Option Plan (the "1999 Plan"), as approved by shareholders on July 19, 1999. The 1999 Plan expired on April 19, 2009. Options previously made under our 1999 Stock Option Plan and outstanding on July 20, 2009 continue in effect governed by provisions of the 1999 Plan. All options granted under the 1999 Plan were granted at or above market price, generally expire up to ten years from the date of grant and are generally exercisable on or after the first anniversary of the date of grant in five to ten annual installments. During the twelve months ended March 31, 2013, 14,395 options were forfeited and 19,105 options were exercised, thus leaving 61,500 options outstanding under the 1999 Plan.

We recognize compensation cost over the straight-line method for all share-based payments granted on or after that date and for all awards granted to employees prior to April 1, 2006 that remain unvested on that date. The fair value of stock options are determined on the date of grant using the Black-Scholes pricing model and are expensed over the vesting period of the related stock options. Share-based compensation cost for restricted stocks is measured based on the closing fair market value of our Company's common stock on the date of the grant. Accordingly, for the years ended March 31, 2013, 2012 and 2011, we recognized stock option compensation expense of $405,945, $1,009,922 and $957,168 respectively.

As of March 31, 2013, the total remaining unrecognized compensation cost related to non-vested stock options was $897,537, which will be amortized over the weighted-average service period of approximately 1.2 years.

The following table summarizes the 2009 Plan and the 1999 Plan price per option at grant date using the Black-Scholes pricing model:

			Black-Scholes Pricing Model Assumptions
Date of Issuance	Weighted Average Fair Value		Expected Dividend Yield			Risk- Free Interest Rate			Expected Volatility			Expected Life (in years)
2009 Plan
July 18, 2011	$	33.07		0.83	%		1.45	%		40.0	%		5
July 19, 2010	$	28.58		0.91	%		1.73	%		37.5	%		5
March 22, 2010	$	32.56		0.84	%		2.43	%		37.8	%		5
October 19, 2009	$	25.36		1.04	%		2.36	%		37.6	%		5
1999 Plan
July 30, 2008	$	29.93		0.62	%		3.36	%		20.2	%		5
July 21, 2008	$	27.35		0.67	%		3.41	%		20.2	%		5
July 16, 2007	$	41.78		0.39	%		4.95	%		19.9	%		5
July 17, 2006	$	33.05		0.61	%		5.04	%		21.2	%		7
May 15, 2006	$	31.28		0.64	%		5.08	%		21.1	%		7

The following table summarizes activity in the 2009 Plan and the 1999 Plan as of March 31, 2013:

	Number of Shares			Weighted Average Exercise Price
2009 Plan
Balance at March 31, 2011		73,750		$	84.24
Granted		10,000			96.92
Exercised		–			–
Canceled/Forfeited		–			–
Balance at March 31, 2012		83,750		$	85.75
Granted		–			–
Exercised		(27,023	)		79.82
Forfeited		(14,000	)		85.78
Balance at March 31, 2013		42,727		$	89.49

1999 Plan
Balance at March 31, 2011		96,500		$	114.78
Granted		–			–
Exercised		(1,500	)		65.70
Forfeited		–			–
Balance at March 31, 2012		95,000		$	113.63
Granted		–			–
Exercised		(19,105	)		95.33
Forfeited		(14,395	)		111.14
Balance at March 31, 2013		61,500		$	132.00
Combined Balance at March 31, 2013		104,227		$	114.58

March 31, 2013	Weighted Average Aggregate Intrinsic Remaining Contractual Term	Value
Outstanding	1.2 years	$	3,310,129
Exercisable	0.7 years	$	2,169,482

At March 31, 2013, the range of exercise prices and weighted-average remaining contractual life of outstanding options was $76.74 to $152.98 and 1.2 year, respectively. The total number of options exercisable under both the 2009 Plan and the 1999 Plan at March 31, 2013, was 63,227 shares with a weighted-average exercise price of $128.47.

At March 31, 2012, the range of exercise prices and weighted-average remaining contractual life of outstanding options was $76.74 to $152.98 and 2.5 years, respectively. The number of options exercisable under the 2009 Plan and the 1999 Plan, at March 31, 2012, was 87,590 with a weighted-average exercise price of $112.25. During the year ended March 31, 2012, 1,500 options were exercised with exercise price at $65.70 per share and 11,400 options were exercised with exercise prices ranging from $65.00 to $65.70 per share during the year ended March 31, 2011. New shares were issued for $98,550 and $745,200 cash received from options exercised during the year ended March 31, 2012 and the year ended March 31, 2011, respectively.

At March 31, 2013, 2012 and 2011, the number of options exercisable was 63,227, 87,590 and 54,325, respectively, and the weighted average price of those options was $128.47, $112.25 and $115.57, respectively.

Stock Awards

Pursuant to the Capital Southwest Corporation 2010 Restricted Stock Award Plan, our Board of Directors reserved for issuance 47,000 shares of restricted stock to certain key employees. A restricted stock award is an award of shares of our common stock (which have full voting and dividend rights but are restricted with regard to sale or transfer), the restrictions on which lapse ratably over a specified period of time (generally five years). Restricted stock awards are independent of stock option grants and are subject to forfeit if employment terminates prior to these restrictions lapsing. These shares vest over a five-year period from the grant date and are expensed over the five-year service period starting on the grant date. On January 16, 2012, the Board of Directors granted 9,650 shares of restricted stock to key employees of the Company. On January 22, 2013, the Board of Directors granted 2,000 shares of restricted stock to officers of the Company. During the twelve months ended March 31, 2013, 3,000 shares of restricted stock were forfeited and 1,330 shares were fully vested. The following table summarizes the restricted stock available for issuance as of March 31, 2013:

Restricted stock available for issuance as of March 31, 2012	37,350
Restricted stock granted during the year	(2,000	)
Restricted stock forfeited during the year	3,000
Restricted stock available for issuance as of March 31, 2013	38,350

We expense the cost of the restricted stock awards, which is determined to equal the fair value of the restricted stock award at the date of the grant on a straight-line basis over the vesting period in which the restrictions on these stock awards lapse. For these purposes, the fair value of the restricted stock award is determined based on the closing price of our common stock on the date of grant. For the fiscal year ended March 31, 2013, we recognized total share based compensation expense of $109,083 related to the restricted stock issued to our employees and officers. For the fiscal year ended March 31, 2012, we recognized total share based compensation expense of $40,377 related to the restricted stock issued to our employees and officers. For the fiscal year ended March 31, 2011, no restricted stock was issued.

As of March 31, 2013, the total remaining unrecognized compensation cost related to non-vested restricted stock awards was $615,200, which will be amortized over the weighted-average service period of approximately 4.1 years.

The following table represents a summary of the activity for our restricted stock awards for the fiscal year ended March 31, 2013:

Restricted Stock Awards	Number of Shares			Weighted Average Fair Value Per Share		Weighted Average Remaining Vesting Term (in Years)
Unvested at March 31, 2012		9,650		$	83.60		3.8
Granted		2,000			104.34		4.8
Vested		(1,330	)		83.60		−
Forfeited		(3,000	)		83.60		−
Unvested at March 31, 2013		7,320		$	89.27		4.1

Phantom Stock Plan

On January 16, 2012, our Board of Directors approved the issuance of 26,000 phantom stock options at an exercise price of $146.95/share (Net Asset Value at December 31, 2011) pursuant to the Capital Southwest Corporation Phantom Stock Option Plan to provide deferred compensation to certain key employees. On January 22, 2013, the Board of Directors granted 4,050 shares of phantom stock options at an exercise price of $158.65 (Net Asset Value at December 31, 2012) to officers of the Company. Under the plan, awards vest on the fifth anniversary of the award date. Upon exercise of the phantom option, a cash payment in an amount for each phantom share equal to estimated fair market value minus the phantom option exercise price will be distributed to plan participants. The estimated liability for phantom stock options is $693,401 as of March 31, 2013.

The following table represents a summary of the activity for our phantom stock plan for the fiscal year ended March 31, 2013:

Phantom Stock Awards	Number of Shares			Exercise Price Per Share		Weighted Average Remaining Vesting Term (in Years)
Unvested at March 31, 2012		26,000		$	146.95		3.8
Granted		4,050		$	158.65		4.8
Vested		−			−		−
Forfeited or expired		(7,500	)	$	146.95		−
Unvested at March 31, 2013		22,550		$	149.05		4.0

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

EMPLOYEE STOCK OWNERSHIP PLAN [Abstract]

EMPLOYEE STOCK OWNERSHIP PLAN

12 Months Ended

Mar. 31, 2013

EMPLOYEE STOCK OWNERSHIP PLAN

7.	EMPLOYEE STOCK OWNERSHIP PLAN

CSW and one of its controlled affiliates sponsor a qualified employee stock ownership plan ("ESOP") in which certain employees participate. Contributions to the plan, which are invested in our stock, are made at the discretion of our Board of Directors. A participant's interest in contributions to the ESOP fully vests after three years of active service.

RETIREMENT PLANS

12 Months Ended

Mar. 31, 2013

RETIREMENT PLANS [Abstract]

RETIREMENT PLANS

8.	RETIREMENT PLANS

CSW sponsors a qualified defined benefit pension plan which covers its employees and employees of certain of its controlled affiliates. The following information about the plan represents amounts and information related to CSW's participation in the plan and is presented as though CSW sponsored a single-employer plan. Benefits are based on years of service and an average of the highest five consecutive years of compensation during the last 10 years of employment. The funding policy of the plan is to contribute annual amounts that are currently deductible for tax reporting purposes. No contribution was made to the plan during the three years ended March 31, 2013.

Additionally, CSW sponsors an unfunded Retirement Restoration Plan, which is a nonqualified plan that provides for the payment, upon retirement, of the difference between the maximum annual payment permissible under the qualified retirement plan pursuant to Federal limitations and the amount which would otherwise have been payable under the qualified plan.

The following tables set forth the qualified plan's net pension benefit, benefit obligation, fair value of plan assets, and amounts recognized in our consolidated statements of operations at March 31, 2013, 2012 and 2011, as well as amounts recognized in our consolidated statements of assets and liabilities at March 31, 2013 and 2012:

	Years Ended March 31
	2013			2012			2011
Net pension benefit
Service cost-benefits earned during the year	$	259,672		$	133,729		$	161,047
Interest cost on projected benefit obligation		286,639			256,558			231,332
Expected return on assets		(784,194	)		(781,299	)		(771,025	)
Net amortization		49,803			9,377			9,377
Net pension benefit from qualified plan	$	(188,080	)	$	(381,635	)	$	(369,269	)

	Years Ended March 31
	2013			2012			2011
Change in benefit obligation
Benefit obligation at beginning of year	$	5,136,555		$	4,213,349		$	3,450,443
Service cost		259,672			133,729			161,047
Interest cost		286,639			256,558			231,332
Actuarial gain (loss)		818,784			601,402			437,959
Benefits paid		(80,039	)		(68,483	)		(67,432	)
Benefit obligation at end of year	$	6,421,611		$	5,136,555		$	4,213,349

	Years Ended March 31
	2013			2012			2011
Change in plan assets
Fair value of plan assets at beginning of year	$	12,485,876		$	11,610,994		$	10,519,400
Actual return on plan assets		2,777,996			943,365			1,159,026
Benefits paid		(80,039	)		(68,483	)		(67,432	)
Fair value of plan assets at end of year	$	15,183,833		$	12,485,876		$	11,610,994

	Years Ended March 31
	2013			2012
Funded status and amounts recognized in consolidated statements of assets and liabilities
Actuarial present value of benefit obligations: Accumulated benefit obligation	$	(5,636,366	)	$	(4,755,675	)
Projected benefit obligation for service rendered to date		(6,421,611	)		(5,136,555	)
Plan assets at fair value*		15,183,833			12,485,876
Funded status		8,762,222			7,349,321
Unrecognized net loss from past experience different from that assumed and effects of changes in assumptions		602,598			1,818,042
Unrecognized prior service costs		122,579			131,956
ASC 715 adjustment		(725,177	)		(1,949,998	)
Prepaid pension cost included in pension assets	$	8,762,222		$	7,349,321

*Primarily equities and bonds including approximately 25,000 shares of CSW Common Stock.

The following tables set forth the retirement restoration plan's net pension benefit and benefit obligation amounts at March 31, 2013, 2012 and 2011, as well as amounts recognized in our consolidated statements of assets and liabilities at March 31, 2013, 2012:

	Years Ended March 31
	2013		2012			2011
Net pension cost
Service cost-benefits earned during the year	$	37,052	$	18,163		$	33,216
Interest cost on projected benefit obligation		106,939		79,056			69,248
Net amortization		9,731		(15,428	)		(24,507	)
Net pension cost from qualified plan	$	153,722	$	81,791		$	77,957

	Years Ended March 31
	2013		2012		2011
Change in benefit obligation
Benefit obligation at beginning of year	$	1,568,392	$	1,256,895	$	1,082,941
Service cost		37,052		18,163		33,216
Interest cost		106,939		79,056		69,248
Actuarial gain (loss)		810,303		214,278		132,940
Other adjustments		127,280		–		(61,450	)
Benefit obligation at end of year	$	2,649,966	$	1,568,392	$	1,256,895

	Years Ended March 31
	2013			2012
Amounts recognized in our consolidated statements of assets and liabilities
Projected benefit obligation	$	(2,649,966	)	$	(1,568,392	)
Unrecognized net (gain) loss from past experience different from that assumed and effects of changes in assumptions		836,122			8,556
Unrecognized prior service costs		(122,296	)		(130,798	)
ASC 715 adjustment		(713,826	)		122,242
Accrued pension cost included in pension liabilities	$	(2,649,966	)	$	(1,568,392	)

The following assumptions were used in estimating the actuarial present value of the projected benefit obligations:

	Years Ended March 31
	2013			2012			2011
Discount rate		4.50	%		5.25	%		6.00	%
Rate of compensation increases		5.00	%		5.00	%		5.00	%

The following assumptions were used in estimating the net periodic (income)/expense:

	Years Ended March 31
	2013			2012			2011
Discount rate		4.50	%		5.25	%		6.00	%
Expected return on plan assets		6.50	%		6.50	%		6.50	%
Rate of compensation increases		5.00	%		5.00	%		5.00	%

Following are the expected benefit payments for the next five years and in the aggregate for the years 2019-2023:

(In thousands)	2014		2015		2016		2017		2018			2019-2023
Qualified Plan	$	222	$	238	$	250	$	334	$	338	$	1,921
Restoration Plan	$	100	$	119	$	134	$	181	$	183	$	965

During the plan year ended March 31, 2013, the discount rate was changed from 5.25% to 4.50%. The retirement assumption was changed from the prior assumption that all participants retire at age 65 with an assumption that reflects rates of retirement at each age between ages 55 and 70 for those participants who are retirement eligible to better reflect the anticipated experience of the plan. The expected rate of return on assets assumption was determined based on the anticipated performance of the various asset classes in the plan's portfolio and the allocation of assets to each class. The anticipated asset class return is developed using historical and predicted asset return performance, considering the investments underlying each asset class and expected investment performance based on forecasts of inflation, interest rates and market indices for fixed income and equity securities.

Plan Assets

Our pension plan is administered by a board-appointed committee that has fiduciary responsibility for the plan's management. The trustee of the plan is JPMorgan Asset Management. Currently, approximately 15% of the assets are selected and managed by the trustee and the remainder of the assets are managed by the committee, invested mostly in equity securities, including our stock. The plan assets are invested using a total return approach whereby a mix of equity securities, debt securities and other investments are used to preserve asset values, diversify risk and achieve our targeted investment return benchmark. Investment performance and asset allocation are measured and monitored on an ongoing basis.

Plan assets are managed in a balanced portfolio comprised of two major components: an equity portion and a fixed income portion. The expected role of plan equity investments is to maximize the long-term real growth of the plan's assets, while the role of fixed income investments is to generate current income, provide for more stable periodic returns and provide some protection against prolonged decline in the market value of the plan's equity investments.

The current target allocations for plan assets are 60-80% equity, 15-40% for fixed income, and 0-15% for cash and cash equivalents. Equity investments include U.S. and foreign equities, as well as publicly traded and non-publicly traded mutual funds. Fixed income securities include long-duration government obligations, government agency obligations and corporate obligations.

CSW's pension plan asset allocations are as follows:

	Percentage of Plan Assets at March 31
Asset Category	2013			2012
Equity securities		78.8	%		77.7	%
Fixed income securities		14.5	%		16.6	%
Cash and cash equivalents		6.7	%		5.7	%
		100.0	%		100.0	%

Below is the pension plan asset for Capital Southwest Corporation and its affiliates, of which Capital Southwest assets were $15,183,833 and $12,485,876 as of March 31, 2013 and 2012 respectively. The following fair value hierarchy table sets forth our pension plan investment portfolio by level as of March 31, 2013 (in millions):

			Fair Value Measurements at Reporting Date Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets Level I		Significant Other Observable Inputs Level 2		Significant Observable Inputs Level 3
Equity securities (a)	$	40.1	$	26.7	$	13.4	$	–
Fixed income securities (b)		7.4		–		7.4		–
Cash and cash equivalents		3.4		3.4		–		–
Total	$	50.9	$	30.1	$	20.8	$	–

The following fair value hierarchy table sets forth our pension plan investment portfolio by level as of March 31, 2012 (in millions):

			Fair Value Measurements at Reporting Date Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets Level I		Significant Other Observable Inputs Level 2		Significant Observable Inputs Level 3
Equity securities (a)	$	32.9	$	21.4	$	11.5	$	–
Fixed income securities (b)		7.0		–		7.0		–
Cash and cash equivalents		2.4		2.4		–		–
Total	$	42.3	$	23.8	$	18.5	$	–

There were no plan assets valued using significant unobservable inputs (level 3) as of March 31, 2013 or 2012.

(a)

This category includes investment in equity securities of large, medium and small companies and equity investments in foreign companies. Mutual funds included in this category are valued using the net asset value per unit as of the valuation date. These investments include shares of our common stock. At March 31, 2013 and 2012, our common stock represented 19.9% and 19.7% respectively, of the plan assets.

(b)

This category includes investments in investment grade fixed income instruments, primarily U.S. government obligations.

The entire disclosure for pension and other postretirement benefits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

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-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS88
-Paragraph 63
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
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-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
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-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
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-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-2
-Paragraph 8
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
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-Number 132R
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-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7, 21, 22
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-Name Accounting Principles Board Opinion (APB)
-Number 30
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COMMITMENTS

12 Months Ended

Mar. 31, 2013

COMMITMENTS [Abstract]

COMMITMENTS

9.	COMMITMENTS

As of March 31, 2013, we had agreed, subject to certain conditions, to invest up to $13,776,042 in eight portfolio companies.

We lease office space under an operating lease which requires base rentals of approximately $200,000 through September 2014. For the three years ended March 31, 2013, total rental expense charged to investment income was $141,155 in 2013, $117,199 in 2012, and $103,703 in 2011.

The entire disclosure for commitments and contingencies.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

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-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
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SELECTED QUARTERLY FINANCIAL DATA [Abstract]

SOURCES OF INCOME

12 Months Ended

Mar. 31, 2013

SOURCES OF INCOME [Abstract]

SOURCES OF INCOME

10.	SOURCES OF INCOME

	Investment Income						Realized Gain (Loss) on Investments before Income Taxes
Year Ended March 31, 2013	Interest		Dividends		Other Income
Companies more than 25% owned	$	−	$	6,944,214	$	484,800	$	20,861,458
Companies 5% to 25% owned		250,298		868,560		66,950		66,037,485
Companies less than 5% owned		1,756,452		279,917		111,963		2,658,871
Other sources, including temporary investments		71,136		−		971		−
	$	2,077,886	$	8,092,691	$	664,684	$	89,557,814
Distribution from Realized Gain		−		−		−		(77,300,714	)*
	$	2,077,886	$	8,092,691	$	664,684	$	12,257,100

* During the twelve months ended March 31, 2013, we distributed $77,300,714 or $20.34 per share of capital gains dividends.

	Investment Income						Realized Gain (Loss) on Investments before Income Taxes
Year Ended March 31, 2012	Interest		Dividends		Other Income
Companies more than 25% owned	$	−	$	5,553,140	$	493,967	$	(10,933,517	)
Companies 5% to 25% owned		253,652		1,006,572		59,700		(45,287	)
Companies less than 5% owned		1,674,051		160,729		79,250		22,805,680
Other sources, including temporary investments		52,477		−		699		−
	$	1,980,180	$	6,720,441	$	633,616	$	11,826,876

	Investment Income						Realized Gain (Loss) on Investments
Year Ended March 31, 2011	Interest		Dividends		Other Income		Before Income Taxes
Companies more than 25% owned	$	−	$	5,024,061	$	671,867	$	70,294,097
Companies 5% to 25% owned		−		326,940		13,000		(6,863,347	)
Companies less than 25% owned		1,304,496		81,270		−		31,833
Other sources, including temporary investments		59,642		−		86,871		−
	$	1,364,138	$	5,432,271	$	771,738	$	63,462,583

SELECTED QUARTERLY FINANCIAL DATA

12 Months Ended

Mar. 31, 2013

SELECTED QUARTERLY FINANCIAL DATA

11.	SELECTED QUARTERLY FINANCIAL DATA

The following presents a summary of the unaudited quarterly consolidated financial information for the years ended March 31, 2013 and 2012 (in thousands except per share amounts):

2013	First Quarter			Second Quarter			Third Quarter		Fourth Quarter			Total
Net investment income (loss)	$	18		$	(120	)	$	4,142	$	(2,133	)	$	1,907
Net realized gain (loss) on investments		66,888			(7	)		640		20,912			88,433
Net increase (decrease) in unrealized appreciation of investments		(78,521	)		50,321			22,296		22,271			16,367
Net increase (decrease) in net assets from operations		(11,615	)		50,194			27,078		41,050			106,707
Net increase (decrease) in net operations per share		(3.05	)		13.18			7.11		10.77			28.01

2012	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Net investment income (loss)	$	14		$	23		$	4,385		$	(1,878	)	$	2,544
Net realized gain (loss) on investments		(5,911	)		18,500			(2,360	)		349			10,578
Net increase(decrease) in unrealized appreciation of investments		(4,588	)		(44,076	)		48,798			78,501			78,635
Net increase (decrease) in net assets from operations		(10,455	)		(25,703	)		50,823			77,092			91,757
Net increase (decrease) in net operations per share		(2.79	)		(6.85	)		13.53			20.53			24.42

SELECTED PER SHARE DATA AND RATIOS [Abstract]

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

SELECTED PER SHARE DATA AND RATIOS

12 Months Ended

Mar. 31, 2013

SELECTED PER SHARE DATA AND RATIOS

12.	SELECTED PER SHARE DATA AND RATIOS

The following presents a summary of the selected per share data for the years ended March 31, 2009 through 2013 (in thousands except per share amounts):

	Years Ended March 31
Per Share Data	2013			2012			2011			2010			2009
Investment income	$	2.84		$	2.49		$	2.01		$	1.63		$	3.74
Operating expenses		(2.19	)		(1.78	)		(1.50	)		(1.04	)		(.98	)
Interest expense		–			–			–			–			–
Income taxes		(.15	)		(.03	)		(.03	)		(.03	)		(.04	)
Net investment income		.50			.68			.48			.56			2.72
Distributions from undistributed net investment income		(.79	)		(.80	)		(.80	)		(.80	)		(3.28	)
Net realized gain net of tax		23.22			2.81			10.36			.22			2.87
Dividends from capital gains		(20.29	)		–			–			–			–
Net increase (decrease) in unrealized appreciation of investments		4.30			20.93			3.46			18.88			(42.56	)
Exercise of employee stock options**		(.97	)		(.02	)		(.20	)		–			–
Forfeiture/ (Issuance) of restricted stock***		(.41	)
Stock option expense		.14			.28			.26			.18			.13
Net change in pension plan funded status		.05			(.11	)		(.02	)		.12			(.39	)
Treasury stock*		–			–			–			–			1.40
Adjustment to initially apply ASC 715, net of tax		–			–			–			–			–
Increase (decrease) in net asset value		5.75			23.77			13.54			19.16			(39.11	)
Net asset value
Beginning of year		167.45			143.68			130.14			110.98			150.09
End of year	$	173.20		$	167.45		$	143.68		$	130.14		$	110.98

Ratios and Supplemental Data
Ratio of operating expenses to average net assets		1.36	%		1.07	%		1.10	%		.87	%		.71	%
Ratio of net investment income to average net assets		.31	%		.41	%		.35	%		.47	%		1.96	%
Portfolio turnover rate		2.22	%		2.15	%		2.78	%		1.16	%		2.51	%
Net asset total return		27.00	%		18.07	%		18.40	%		18.50	%		(22.56	)%

Shares outstanding at end of period (000s) omitted		3,809			3,755			3,753			3,741			3,741

*	Net increase is due to purchases of common stock at prices less than beginning period net asset value.

**	Net decrease is due to the exercise of employee stock options at prices less than beginning of period net asset value.

***	Reflects impact of the different share amounts as a result of issuance or forfeiture of restricted stock during the period.

SUBSEQUENT EVENTS

12 Months Ended

Mar. 31, 2013

SUBSEQUENT EVENTS [Abstract]

SUBSEQUENT EVENTS

13.	SUBSEQUENT EVENTS

On May 17, 2013, Capital Southwest Corporation announced that Gary L. Martin, president, chief executive officer and chairman of the Company will retire as president and chief executive officer effective June 17, 2013 and that its board of directors has named Joseph B. Armes to succeed Mr. Martin as president and chief executive officer. Additionally, the board increased the number of board seats from five to six and appointed Mr. Armes a director of the Company, effective June 17, 2013.

Effective June 17, 2013, Mr. Armes will receive cash compensation for FYE 2014 comprised of base pay at the annual rate of $430,000 and may earn an annual cash bonus of up to 150% based upon achievement of specified goals. In addition, he will also receive i) options to acquire 7,500 shares of common stock pursuant to our 2009 Stock Option Plan, the options vest equally over five years from the grant date; ii) 1,250 common shares underlying a restricted stock award that vests equally over five years from the grant date; iii) 6,000 shares of phantom stock options that will vest over five years from the grant date. These options and restricted stock awards will be awarded during the July 15, 2013 Compensation Committee Meeting, and the exercise and strike prices will be determined at that date.

Schedule of Investments in and Advances to Affiliates

12 Months Ended

Mar. 31, 2013

Schedule of Investments in and Advances to Affiliates [Abstract]

Schedule of Investments in and Advances to Affiliates

SCHEDULE 12-14

Schedule of Investments in and Advances to Affiliates

(In thousands)

Portfolio Company / Type of Investment (1)	Amount of Interest, Fees or Dividends Credited in Income (2)		Fair Value at March 31, 2012		Gross Additions (3)		Gross Reductions (4)		Fair Value at March 31, 2013
Control Investments
The RectorSeal Corporation 27,907 shares common stock	$	5,915	$	166,300	$	72,600		−	$	238,900
The Whitmore Manufacturing Company 80 shares common stock		1,509		67,200		13,300		−		80,500
Heelys, Inc. 9,317,310 shares common stock		−		20,498		−		20,498		−
Media Recovery, Inc. 800,000 shares Series A Convertible Preferred Stock, convertible into 800,000 shares common stock		−		3,100		−		1,100		2,000
4,000,002 shares common stock		−		15,600		−		5,700		9,900
Balco, Inc. 445,000 shares common stock; 60,920 shares Class B non-voting common		−		4,100		400		−		4,500
CapStar Holdings Corporation 500 shares common stock;		−		5,338		840		−		6,178
1,000,000 shares preferred stock		−		−		1,668		−		1,668
Discovery Alliance, LLC 90.0% limited liability company		−		1,280		−		324		956
Humac Company 1,041,000 shares of common stock		5		159		29		-		188
Total Control Investments	$	7,429	$	283,575	$	88,837	$	27,622	$	344,790

Portfolio Company / Type of Investment (1)	Amount of Interest, Fees or Dividends Credited in Income (2)		Fair Value at March 31, 2012		Gross Additions (3)		Gross Reductions (4)		Fair Value at March 31, 2013
Affiliated Investments
Alamo Group, Inc. 2,830,300 shares common stock	$	764		85,139		23,139				108,278
Encore Wire Corporation 1,312,500 shares of common stock		172		121,458		−		75,507		45,951
PalletOne, Inc. 12.3% Senior Subordinated Notes, $2,000,000 due 2015		250		2,000		−		100		1,900
150,000 shares of common stock		−		−		−		−		−
Warrant to purchase 15,294 shares of common stock at $1,00 per share, expiring 2011		−		−		−		−		−
Boxx Technologies, Inc. 3,125,354 shares Series B Convertible Preferred Stock, convertible into 3,125,354 shares of common stock at $0.50 per share		−		600		640		−		1,240
Wellogix, Inc. 4,788,371 shares Series A-1 Convertible Preferred Stock, convertible into 4,788,371 shares of common stock at $1.0441 per share		−		25		−		−		25
Total Affiliated Investments	$	1,186	$	209,222	$	23,779	$	75,607	$	157,394
Total Control & Affiliated Investments	$	8,615	$	492,797	$	112,616	$	103,229	$	502,184

This schedule should be read in conjunction with our Consolidated Financial Statements, including the Consolidated Schedules of Investments and Notes to Consolidated Financial Statements.

(1)	The principal amount and ownership detail as shown in the Consolidated Schedules of Investments.

(2)	Represents the total amount of interest, fees and dividends, credited to income for the portion of the year an investment was included in the Control or Non-Control/Non-Affiliate categories, respectively.

(3)

Gross additions include increases in the cost basis of investments resulting from new portfolio investments, follow-on investments and accrued PIK interest, and the exchange of one or more existing securities for one or more new securities. Gross additions also include net increases in unrealized appreciation or net decreases in unrealized depreciation as well as movement of an existing portfolio company into this category and out of a different category.

(4)

Gross reductions included in decreases in the cost basis of investment resulting from principal payments or sales and exchanges of one or more existing securities for one or more new securities. Gross reductions also include net increases in unrealized depreciation or net decreases in unrealized appreciation as well as the movement of an existing portfolio company out of this category and into a different category.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Mar. 31, 2013
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Fair Value Measurements	Fair Value Measurements We adopted FASB ASC Topic 820 on April 1, 2008. ASC Topic 820 (1) creates a single definition of fair value, (2) establishes a framework for measuring fair value, and (3) expands disclosure requirements about items measured at fair value. The Statement applies to both items recognized and reported at fair value in the financial statements and items disclosed at fair value in the notes to the financial statements. The Statement does not change existing accounting rules governing what can or what must be recognized and reported at fair value in our financial statements, or disclosed at fair value in our notes to financial statements. Additionally, ASC Topic 820 does not eliminate practicability exceptions that exist in accounting pronouncements amended by this Statement when measuring fair value. Fair value is generally determined based on quoted market prices in the active markets for identical assets or liabilities. If quoted market prices are not available, we use valuation techniques that place greater reliance on observable inputs and less reliance on unobservable inputs. Due to the inherent uncertainty in the valuation process, our estimate of fair value may differ materially from the values that would have been used had a ready market for the securities existed. In addition, changes in the market environment, portfolio company performance and other events may occur over the lives of the investments that may cause the gains or losses ultimately realized on these investments to be materially different than the valuations currently assigned. We determine the fair value of each individual investment and record changes in fair value as unrealized appreciation or depreciation. Pursuant to our internal valuation process, each portfolio company is valued once a quarter. In addition to our internal valuation process, our Board of Directors retains a nationally recognized firm to provide limited scope third party valuation services on certain portfolio investments. Our Board of Directors retained Duff & Phelps to provide limited scope third party valuation services on three investments comprising 57.7% of our net asset value at March 31, 2013. We believe our investments at March 31, 2013 and March 31, 2012 approximate fair value as of those dates based on the market in which we operate and other conditions in existence at those reporting periods.
Investments	Investments Investments are stated at fair value determined by our Board of Directors as described in Notes to the Consolidated Schedule of Investments and Note 3 below. The average cost method is used in determining cost of investments sold. Investments are recorded on a trade date basis.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of highly liquid investments with an original maturity of three months or less at the date of purchase. Cash and cash equivalents are carried at cost, which approximates fair value.
Segment Information	Segment Information We operate and manage our business in a singular segment. As an investment company, we invest in portfolio companies in various industries and geographic areas as presented in the Consolidated Schedule of Investments.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Interest and Dividend Income	Interest and Dividend Income Interest and dividend income is recorded on an accrual basis to the extent amounts are expected to be collected. Dividend income is recorded at the ex-dividend date for marketable securities and restricted securities. In accordance with our valuation policy, accrued interest and dividend income is evaluated periodically for collectability. When a debt or loan becomes 90 days or more past due, and if we otherwise do not expect the debtor to be able to service all of its debt or other obligations, we will generally establish a reserve against the interest income, thereby placing the loan or debt security's status on non-accrual basis, and cease to recognize interest income on that loan or debt security until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a loan or debt security's status significantly improves regarding ability to service debt or other obligations, it will be restored to accrual basis.
Federal Income Taxes	Federal Income Taxes CSW and CSVC have elected and intend to comply with the requirements of the Internal Revenue Code (IRC) necessary to qualify as regulated investment companies (RICs). By meeting these requirements, they will not be subject to corporate federal income taxes on ordinary income distributed to shareholders. In order to comply as a RIC, each company is required to timely distribute to its shareholders at least 90% of investment company taxable income, as defined by the IRC, each year. Investment company taxable income generally differs from net income for financial reporting purposes due to temporary and permanent differences in the recognition of income and expenses. Investment company taxable income generally excludes net unrealized appreciation or depreciation, as investment gains and losses are not included in investment company taxable income until they are realized. In addition to the requirement that we must annually distribute at least 90% of our investment company taxable income, we may either distribute or retain our realized net capital gains from investments, but any net capital gains not distributed may be subject to corporate level tax. Historically, we have not distributed net capital gains; however, during the twelve months ended March 31, 2013, we distributed capital gains dividends in the amount of $20.34 per share to our shareholders. When we retain the capital gains, they are classified as a "deemed distribution" to our shareholders and are subject to our corporate tax rate of 35%. As an investment company that qualifies as a RIC under the IRC, federal income taxes payable on security gains that we elect to retain are accrued only on the last day of our tax year, December 31. Any capital gains actually distributed to shareholders are generally taxable to the shareholders as long-term capital gains. See Note 4 for further discussion. CSMC, a wholly owned subsidiary of CSW, is not a RIC and is required to pay taxes at the current corporate rate. We account for interest and penalties as part of operating expenses. There were no interest or penalties incurred during the years ended March 31, 2013, 2012 and 2011. Deferred Taxes CSMC sponsors a qualified defined benefit pension plan which covers its employees and employees of certain of its controlled affiliates. Deferred taxes related to the qualified defined benefit pension plan are recorded as incurred.
Stock-Based Compensation	Stock-Based Compensation We account for our stock-based compensation using the fair value method, as prescribed by ASC 718, Compensation – Stock Compensation. Accordingly, we recognize stock-based compensation cost over the straight-line method for all share-based payments awards granted to employees. The fair value of stock options are determined on the date of grant using the Black-Scholes pricing model and are expensed over the vesting period of the related stock options. For restricted stock awards, we measured the grant date fair value based upon the market price of our common stock on the date of the grant and will amortize this fair value to shared-based compensation expense over the vesting term. For phantom stock options, the option value of phantom stock awards is calculated based on the net asset value of the Corporation. We value the plan each quarter and either increase or decrease the liability based on the phantom option value. See Note 6 for further discussion.
Defined Pension Benefits and Other Postretirement Plans	Defined Pension Benefits and Other Postretirement Plans We record annual amounts relating to the defined benefit pension plan based on calculations, which include various actuarial assumptions such as discount rates and assumed rates of return depending on the pension plan. Material changes in pension costs could occur to changes in the discount rate, changes in the expected long-term rate of return, changes in level of contributions to the plans and other factors. The funded status is the difference between the fair value of plan assets and the benefit obligation. We recognize changes in the funded status of defined benefit plan in the Statement of Assets and Liabilities in the year in which the changes occur and measure defined benefit plan assets and obligations as of the date of the employer's fiscal year-end. We presently use March 31 as the measurement date for our defined benefit plan.
Concentration of Risk	Concentration of Risk We place our idle cash in financial institutions, and at times, such balances may be in excess of the federally insured limits.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2011, the FASB issued Accounting Standards Update ("ASU") 2011-04, Fair Value Measurements (ASC 820), Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs ("ASU 2011-04"). ASU 2011-04 results in common fair value measurement and disclosure requirements in U.S. GAAP and IFRSs. ASU 2011-04 is effective for interim and annual reporting periods beginning after December 15, 2011. The adoption of ASU 2011-04 did not have a significant impact on our financial condition and results of operations. See Note 3 Investments, for further information regarding valuation techniques and quantitative information about the significant unobservable inputs utilized by our Company to value Level 3 investments.

INVESTMENTS (Tables)

12 Months Ended

Mar. 31, 2013

INVESTMENTS [Abstract]

Valuation technique and qualitative information

Type	Valuation Technique	Fair Value at 3/31/2013 (in millions)		Unobservable Input	Range			Weighted Average
Preferred & Common Equity	Market Approach	$	342.2	EBITDA Multiple		3.25x – 7.00x			6.45	x
	Market Approach	$	11.1	Revenue Multiple		0.25x – 1.82x			0.97	x
	Market Approach	$	7.9	Cash and Asset Value	NA			NA
	Discounted Cash Flow	$	0.7	Discount Rate		1.75	%		1.75	%
	Market Approach	$	3.0	Multiple of Tangible Book Value		1.22	x		1.22	x
	Market Approach	$	22.6	Recent Transaction Price	NA			NA
	Market Approach	$	0.2	Market Value of Held Securities	NA			NA
		$	387.7
Debt	Discounted Cash Flow	$	3.1	Discount Rate		10.02% -12.00	%		10.77	%
	Recent Transaction Price	$	3.5	Recent Transaction Price	NA			NA
		$	6.6
Partnership Interests	Net Asset Value*	$	12.2	Fund Value	NA			NA
	Total	$	406.5

Type	Valuation Technique	Fair Value at 3/31/2012 (in millions)		Unobservable Input	Range			Weighted Average
Preferred & Common Equity	Market Approach	$	270.2	EBITDA Multiple		3.25x - 6.50x			5.71	x
	Market Approach	$	11.7	Revenue Multiple		1.10x – 1.97x			1.48	x
	Market Approach	$	5.5	Cash and Asset Value	NA			NA
	Discounted Cash Flow	$	0.8	Discount Rate		3.56	%		3.56	%
	Market Approach	$	2.3	Multiple of Tangible Book Value		1.00	x		1.00	x
	Market Approach	$	5.0	Recent Transaction Price	NA			NA
	Market Approach	$	0.1	Market Value of Held Securities	NA			NA
		$	295.6
Debt	Discounted Cash Flow	$	8.0	Discount Rate		10.31%-16.22	%		14.74	%
	Recent Transaction Price	$	3.2	Recent Transaction Price	NA			NA
		$	11.2
Partnership Interests	Net Asset Value*	$	11.0	Fund Value	NA			NA
	Total	$	317.8

Investment portfolio

The following fair value hierarchy tables set forth our investment portfolio by level as of March 31, 2013 and March 31, 2012 (in millions):

			Fair Value Measurements at 3/31/13 Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Debt	$	6.6	$	−	$	−	$	6.6
Partnership Interests		12.2		−		−		12.2
Preferred Equity		44.6		−		−		44.6
Common Equity		510.8		167.7		−		343.1
Total Investments	$	574.2	$	167.7	$	−	$	406.5

			Fair Value Measurements at 3/31/12 Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Debt	$	11.2	$	−	$	−	$	11.2
Partnership Interests		11.0		−		−		11.0
Preferred Equity		33.9		−		−		33.9
Common Equity		502.4		240.7		−		261.7
Total Investments	$	558.5	$	240.7	$	−	$	317.8

Changes in the fair value of investments

The following table provides a summary of changes in the fair value of investments measured using Level 3 inputs during the years ended March 31, 2013 and 2012 (in millions):

	Fair Value 3/31/12		Net Unrealized Appreciation (Depreciation)			New Investments		Divestitures			Net Changes from Unrealized to Realized			Conversion of Security from Debt to Equity			Transfer out of Level 3		Fair Value at 3/31/13
Debt	$	11.2	$	(5.4	)	$	4.0	$	−		$	−		$	(3.2	)	$	−	$	6.6
Partnership Interest		11.0		1.5			0.5		−			(0.8	)		−			−		12.2
Preferred Equity		33.9		12.3			−		(9.8	)		5			3.2			−		44.6
Common Equity		261.7		82.1			−		−			(0.7	)		−			−		343.1
Total Investments	$	317.8	$	90.5		$	4.5	$	(9.8	)	$	3.5		$	−		$	−	$	406.5

	Fair Value 3/31/11		Net Unrealized Appreciation (Depreciation)			New Investments		Divestitures			Net Changes from Unrealized to Realized			Conversion of Security from Debt to Equity		Transfer out of Level 3		Fair Value at 3/31/12
Debt	$	12.7	$	(4.6	)	$	6.6	$	(1.0	)	$	(2.5	)		−	$	−	$	11.2
Partnership Interest		9.5		0.2			1.3		−			−			−		−		11.0
Preferred Equity		45.8		(2.9	)		6.3		(6.1	)		(9.2	)		−		−		33.9
Common Equity		394.5		87.0			0.0		−			7.3			−		227.1		261.7
Total Investments	$	462.5	$	79.7		$	14.2	$	(7.1	)	$	(4.4	)		−	$	227.1	$	317.8

Tabular disclosure related to assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition. Disclosures include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3) as well as transfers between levels 1 and 2.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19279-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a,b,bb)
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2C
-URI http://asc.fasb.org/extlink&oid=7578670&loc=SL7498348-110258

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 33
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 6
-Footnote 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Summary of our net realized gains on transactions by category

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

INCOME TAXES (Tables)

12 Months Ended

Mar. 31, 2013

INCOME TAXES [Abstract]

The following table sets forth a summary of our net realized gains on transactions by category:

Net Realized Gains on Transactions In	For the Tax Year Ended December 31
Investment Securities of	2012			2011
Control Investments	$	−		$	−
Affiliated Investments		66,037,485			−
Non-Control/Non-Affiliated Investments		3,107,309			4,465,088
Net realized gain on investments	$	69,144,794		$	4,465,088
Capital gain distribution		(66,825,782	)		−
Income tax expense		1,125,092			1,248,932
Net realized gains on investments	$	1,193,920		$	3,216,156
Net realized gains on investment (for tax purposes)	$	3,214,547		$	3,568,376

EMPLOYEE STOCK BASED COMPENSATION PLANS (Tables)

12 Months Ended

Mar. 31, 2013

EMPLOYEE STOCK BASED COMPENSATION PLANS [Abstract]

Summary of assumptions used in the valuation of option grants

The following table summarizes the 2009 Plan and the 1999 Plan price per option at grant date using the Black-Scholes pricing model:

			Black-Scholes Pricing Model Assumptions
Date of Issuance	Weighted Average Fair Value		Expected Dividend Yield			Risk- Free Interest Rate			Expected Volatility			Expected Life (in years)
2009 Plan
July 18, 2011	$	33.07		0.83	%		1.45	%		40.0	%		5
July 19, 2010	$	28.58		0.91	%		1.73	%		37.5	%		5
March 22, 2010	$	32.56		0.84	%		2.43	%		37.8	%		5
October 19, 2009	$	25.36		1.04	%		2.36	%		37.6	%		5
1999 Plan
July 30, 2008	$	29.93		0.62	%		3.36	%		20.2	%		5
July 21, 2008	$	27.35		0.67	%		3.41	%		20.2	%		5
July 16, 2007	$	41.78		0.39	%		4.95	%		19.9	%		5
July 17, 2006	$	33.05		0.61	%		5.04	%		21.2	%		7
May 15, 2006	$	31.28		0.64	%		5.08	%		21.1	%		7

Summary of option activity

The following table summarizes activity in the 2009 Plan and the 1999 Plan as of March 31, 2013:

	Number of Shares			Weighted Average Exercise Price
2009 Plan
Balance at March 31, 2011		73,750		$	84.24
Granted		10,000			96.92
Exercised		–			–
Canceled/Forfeited		–			–
Balance at March 31, 2012		83,750		$	85.75
Granted		–			–
Exercised		(27,023	)		79.82
Forfeited		(14,000	)		85.78
Balance at March 31, 2013		42,727		$	89.49

1999 Plan
Balance at March 31, 2011		96,500		$	114.78
Granted		–			–
Exercised		(1,500	)		65.70
Forfeited		–			–
Balance at March 31, 2012		95,000		$	113.63
Granted		–			–
Exercised		(19,105	)		95.33
Forfeited		(14,395	)		111.14
Balance at March 31, 2013		61,500		$	132.00
Combined Balance at March 31, 2013		104,227		$	114.58

March 31, 2013	Weighted Average Aggregate Intrinsic Remaining Contractual Term	Value
Outstanding	1.2 years	$	3,310,129
Exercisable	0.7 years	$	2,169,482

Restricted stock available for issuance

Restricted stock available for issuance as of March 31, 2012	37,350
Restricted stock granted during the year	(2,000	)
Restricted stock forfeited during the year	3,000
Restricted stock available for issuance as of March 31, 2013	38,350

Restricted stock awards activity

The following table represents a summary of the activity for our restricted stock awards for the fiscal year ended March 31, 2013:

Restricted Stock Awards	Number of Shares			Weighted Average Fair Value Per Share		Weighted Average Remaining Vesting Term (in Years)
Unvested at March 31, 2012		9,650		$	83.60		3.8
Granted		2,000			104.34		4.8
Vested		(1,330	)		83.60		−
Forfeited		(3,000	)		83.60		−
Unvested at March 31, 2013		7,320		$	89.27		4.1

Phantom stock awards activity

The following table represents a summary of the activity for our phantom stock plan for the fiscal year ended March 31, 2013:

Phantom Stock Awards	Number of Shares			Exercise Price Per Share		Weighted Average Remaining Vesting Term (in Years)
Unvested at March 31, 2012		26,000		$	146.95		3.8
Granted		4,050		$	158.65		4.8
Vested		−			−		−
Forfeited or expired		(7,500	)	$	146.95		−
Unvested at March 31, 2013		22,550		$	149.05		4.0

RETIREMENT PLANS (Tables)

12 Months Ended

Mar. 31, 2013

Schedule of assumptions used in estimating present value and periodic expense

Change in plan assets

			Fair Value Measurements at Reporting Date Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets Level I		Significant Other Observable Inputs Level 2		Significant Observable Inputs Level 3
Equity securities (a)	$	40.1	$	26.7	$	13.4	$	–
Fixed income securities (b)		7.4		–		7.4		–
Cash and cash equivalents		3.4		3.4		–		–
Total	$	50.9	$	30.1	$	20.8	$	–

The following fair value hierarchy table sets forth our pension plan investment portfolio by level as of March 31, 2012 (in millions):

			Fair Value Measurements at Reporting Date Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets Level I		Significant Other Observable Inputs Level 2		Significant Observable Inputs Level 3
Equity securities (a)	$	32.9	$	21.4	$	11.5	$	–
Fixed income securities (b)		7.0		–		7.0		–
Cash and cash equivalents		2.4		2.4		–		–
Total	$	42.3	$	23.8	$	18.5	$	–

There were no plan assets valued using significant unobservable inputs (level 3) as of March 31, 2013 or 2012.

(a)

(b)

This category includes investments in investment grade fixed income instruments, primarily U.S. government obligations.

The following assumptions were used in estimating the actuarial present value of the projected benefit obligations:

	Years Ended March 31
	2013			2012			2011
Discount rate		4.50	%		5.25	%		6.00	%
Rate of compensation increases		5.00	%		5.00	%		5.00	%

The following assumptions were used in estimating the net periodic (income)/expense:

	Years Ended March 31
	2013			2012			2011
Discount rate		4.50	%		5.25	%		6.00	%
Expected return on plan assets		6.50	%		6.50	%		6.50	%
Rate of compensation increases		5.00	%		5.00	%		5.00	%

Schedule of fair value of plan assets

			Fair Value Measurements at Reporting Date Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets Level I		Significant Other Observable Inputs Level 2		Significant Observable Inputs Level 3
Equity securities (a)	$	40.1	$	26.7	$	13.4	$	–
Fixed income securities (b)		7.4		–		7.4		–
Cash and cash equivalents		3.4		3.4		–		–
Total	$	50.9	$	30.1	$	20.8	$	–

The following fair value hierarchy table sets forth our pension plan investment portfolio by level as of March 31, 2012 (in millions):

			Fair Value Measurements at Reporting Date Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets Level I		Significant Other Observable Inputs Level 2		Significant Observable Inputs Level 3
Equity securities (a)	$	32.9	$	21.4	$	11.5	$	–
Fixed income securities (b)		7.0		–		7.0		–
Cash and cash equivalents		2.4		2.4		–		–
Total	$	42.3	$	23.8	$	18.5	$	–

There were no plan assets valued using significant unobservable inputs (level 3) as of March 31, 2013 or 2012.

(a)

(b)

This category includes investments in investment grade fixed income instruments, primarily U.S. government obligations.

Qualified Plan [Member]

Change in benefit obligation

Net pension benefit\cost

	Years Ended March 31
	2013			2012			2011
Net pension benefit
Service cost-benefits earned during the year	$	259,672		$	133,729		$	161,047
Interest cost on projected benefit obligation		286,639			256,558			231,332
Expected return on assets		(784,194	)		(781,299	)		(771,025	)
Net amortization		49,803			9,377			9,377
Net pension benefit from qualified plan	$	(188,080	)	$	(381,635	)	$	(369,269	)

	Years Ended March 31
	2013			2012			2011
Change in benefit obligation
Benefit obligation at beginning of year	$	5,136,555		$	4,213,349		$	3,450,443
Service cost		259,672			133,729			161,047
Interest cost		286,639			256,558			231,332
Actuarial gain (loss)		818,784			601,402			437,959
Benefits paid		(80,039	)		(68,483	)		(67,432	)
Benefit obligation at end of year	$	6,421,611		$	5,136,555		$	4,213,349

Change in plan assets

	Years Ended March 31
	2013			2012			2011
Change in plan assets
Fair value of plan assets at beginning of year	$	12,485,876		$	11,610,994		$	10,519,400
Actual return on plan assets		2,777,996			943,365			1,159,026
Benefits paid		(80,039	)		(68,483	)		(67,432	)
Fair value of plan assets at end of year	$	15,183,833		$	12,485,876		$	11,610,994

Funded status and amounts recognized in consolidated statements of assets and liabilities

	Years Ended March 31
	2013			2012
Funded status and amounts recognized in consolidated statements of assets and liabilities
Actuarial present value of benefit obligations: Accumulated benefit obligation	$	(5,636,366	)	$	(4,755,675	)
Projected benefit obligation for service rendered to date		(6,421,611	)		(5,136,555	)
Plan assets at fair value*		15,183,833			12,485,876
Funded status		8,762,222			7,349,321
Unrecognized net loss from past experience different from that assumed and effects of changes in assumptions		602,598			1,818,042
Unrecognized prior service costs		122,579			131,956
ASC 715 adjustment		(725,177	)		(1,949,998	)
Prepaid pension cost included in pension assets	$	8,762,222		$	7,349,321

*Primarily equities and bonds including approximately 25,000 shares of CSW Common Stock.

Expected benefit payments

Following are the expected benefit payments for the next five years and in the aggregate for the years 2019-2023:

(In thousands)	2014		2015		2016		2017		2018			2019-2023
Qualified Plan	$	222	$	238	$	250	$	334	$	338	$	1,921
Restoration Plan	$	100	$	119	$	134	$	181	$	183	$	965

Allocation of plan assets

CSW's pension plan asset allocations are as follows:

	Percentage of Plan Assets at March 31
Asset Category	2013			2012
Equity securities		78.8	%		77.7	%
Fixed income securities		14.5	%		16.6	%
Cash and cash equivalents		6.7	%		5.7	%
		100.0	%		100.0	%

Schedule of fair value of plan assets

	Years Ended March 31
	2013			2012			2011
Change in plan assets
Fair value of plan assets at beginning of year	$	12,485,876		$	11,610,994		$	10,519,400
Actual return on plan assets		2,777,996			943,365			1,159,026
Benefits paid		(80,039	)		(68,483	)		(67,432	)
Fair value of plan assets at end of year	$	15,183,833		$	12,485,876		$	11,610,994

Restoration Plan [Member]

Change in benefit obligation

Net pension benefit\cost

	Years Ended March 31
	2013		2012			2011
Net pension cost
Service cost-benefits earned during the year	$	37,052	$	18,163		$	33,216
Interest cost on projected benefit obligation		106,939		79,056			69,248
Net amortization		9,731		(15,428	)		(24,507	)
Net pension cost from qualified plan	$	153,722	$	81,791		$	77,957

	Years Ended March 31
	2013		2012		2011
Change in benefit obligation
Benefit obligation at beginning of year	$	1,568,392	$	1,256,895	$	1,082,941
Service cost		37,052		18,163		33,216
Interest cost		106,939		79,056		69,248
Actuarial gain (loss)		810,303		214,278		132,940
Other adjustments		127,280		–		(61,450	)
Benefit obligation at end of year	$	2,649,966	$	1,568,392	$	1,256,895

Funded status and amounts recognized in consolidated statements of assets and liabilities

	Years Ended March 31
	2013			2012
Amounts recognized in our consolidated statements of assets and liabilities
Projected benefit obligation	$	(2,649,966	)	$	(1,568,392	)
Unrecognized net (gain) loss from past experience different from that assumed and effects of changes in assumptions		836,122			8,556
Unrecognized prior service costs		(122,296	)		(130,798	)
ASC 715 adjustment		(713,826	)		122,242
Accrued pension cost included in pension liabilities	$	(2,649,966	)	$	(1,568,392	)

SOURCES OF INCOME (Tables)

12 Months Ended

Mar. 31, 2013

SOURCES OF INCOME [Abstract]

Sources of Income

	Investment Income						Realized Gain (Loss) on Investments before Income Taxes
Year Ended March 31, 2013	Interest		Dividends		Other Income
Companies more than 25% owned	$	−	$	6,944,214	$	484,800	$	20,861,458
Companies 5% to 25% owned		250,298		868,560		66,950		66,037,485
Companies less than 5% owned		1,756,452		279,917		111,963		2,658,871
Other sources, including temporary investments		71,136		−		971		−
	$	2,077,886	$	8,092,691	$	664,684	$	89,557,814
Distribution from Realized Gain		−		−		−		(77,300,714	)*
	$	2,077,886	$	8,092,691	$	664,684	$	12,257,100

* During the twelve months ended March 31, 2013, we distributed $77,300,714 or $20.34 per share of capital gains dividends.

	Investment Income						Realized Gain (Loss) on Investments before Income Taxes
Year Ended March 31, 2012	Interest		Dividends		Other Income
Companies more than 25% owned	$	−	$	5,553,140	$	493,967	$	(10,933,517	)
Companies 5% to 25% owned		253,652		1,006,572		59,700		(45,287	)
Companies less than 5% owned		1,674,051		160,729		79,250		22,805,680
Other sources, including temporary investments		52,477		−		699		−
	$	1,980,180	$	6,720,441	$	633,616	$	11,826,876

	Investment Income						Realized Gain (Loss) on Investments
Year Ended March 31, 2011	Interest		Dividends		Other Income		Before Income Taxes
Companies more than 25% owned	$	−	$	5,024,061	$	671,867	$	70,294,097
Companies 5% to 25% owned		−		326,940		13,000		(6,863,347	)
Companies less than 25% owned		1,304,496		81,270		−		31,833
Other sources, including temporary investments		59,642		−		86,871		−
	$	1,364,138	$	5,432,271	$	771,738	$	63,462,583

SELECTED QUARTERLY FINANCIAL DATA [Abstract]

Tabular disclosure of investment income derived from investments in debt and equity securities consisting of interest income earned from investments in debt securities and on cash and cash equivalents, dividend income from investments in equity securities, and income or expense derived from the amortization of investment related discounts or premiums, respectively. This item does not include realized or unrealized gains or losses on the sale or holding of investments in debt and equity securities required to be included in earnings for the period or for other than temporary losses related to investments in debt and equity securities which are included in realized losses in the period recognized.

+ References + Details

SELECTED QUARTERLY FINANCIAL DATA (Tables)

12 Months Ended

Mar. 31, 2013

Schedule of Quarterly Financial Information

The following presents a summary of the unaudited quarterly consolidated financial information for the years ended March 31, 2013 and 2012 (in thousands except per share amounts):

2013	First Quarter			Second Quarter			Third Quarter		Fourth Quarter			Total
Net investment income (loss)	$	18		$	(120	)	$	4,142	$	(2,133	)	$	1,907
Net realized gain (loss) on investments		66,888			(7	)		640		20,912			88,433
Net increase (decrease) in unrealized appreciation of investments		(78,521	)		50,321			22,296		22,271			16,367
Net increase (decrease) in net assets from operations		(11,615	)		50,194			27,078		41,050			106,707
Net increase (decrease) in net operations per share		(3.05	)		13.18			7.11		10.77			28.01

2012	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Net investment income (loss)	$	14		$	23		$	4,385		$	(1,878	)	$	2,544
Net realized gain (loss) on investments		(5,911	)		18,500			(2,360	)		349			10,578
Net increase(decrease) in unrealized appreciation of investments		(4,588	)		(44,076	)		48,798			78,501			78,635
Net increase (decrease) in net assets from operations		(10,455	)		(25,703	)		50,823			77,092			91,757
Net increase (decrease) in net operations per share		(2.79	)		(6.85	)		13.53			20.53			24.42

SELECTED PER SHARE DATA AND RATIOS (Tables)

12 Months Ended

Mar. 31, 2013

SELECTED PER SHARE DATA AND RATIOS [Abstract]

Summary of per share data

The following presents a summary of the selected per share data for the years ended March 31, 2009 through 2013 (in thousands except per share amounts):

	Years Ended March 31
Per Share Data	2013			2012			2011			2010			2009
Investment income	$	2.84		$	2.49		$	2.01		$	1.63		$	3.74
Operating expenses		(2.19	)		(1.78	)		(1.50	)		(1.04	)		(.98	)
Interest expense		–			–			–			–			–
Income taxes		(.15	)		(.03	)		(.03	)		(.03	)		(.04	)
Net investment income		.50			.68			.48			.56			2.72
Distributions from undistributed net investment income		(.79	)		(.80	)		(.80	)		(.80	)		(3.28	)
Net realized gain net of tax		23.22			2.81			10.36			.22			2.87
Dividends from capital gains		(20.29	)		–			–			–			–
Net increase (decrease) in unrealized appreciation of investments		4.30			20.93			3.46			18.88			(42.56	)
Exercise of employee stock options**		(.97	)		(.02	)		(.20	)		–			–
Forfeiture/ (Issuance) of restricted stock***		(.41	)
Stock option expense		.14			.28			.26			.18			.13
Net change in pension plan funded status		.05			(.11	)		(.02	)		.12			(.39	)
Treasury stock*		–			–			–			–			1.40
Adjustment to initially apply ASC 715, net of tax		–			–			–			–			–
Increase (decrease) in net asset value		5.75			23.77			13.54			19.16			(39.11	)
Net asset value
Beginning of year		167.45			143.68			130.14			110.98			150.09
End of year	$	173.20		$	167.45		$	143.68		$	130.14		$	110.98

Ratios and Supplemental Data
Ratio of operating expenses to average net assets		1.36	%		1.07	%		1.10	%		.87	%		.71	%
Ratio of net investment income to average net assets		.31	%		.41	%		.35	%		.47	%		1.96	%
Portfolio turnover rate		2.22	%		2.15	%		2.78	%		1.16	%		2.51	%
Net asset total return		27.00	%		18.07	%		18.40	%		18.50	%		(22.56	)%

Shares outstanding at end of period (000s) omitted		3,809			3,755			3,753			3,741			3,741

*	Net increase is due to purchases of common stock at prices less than beginning period net asset value.

**	Net decrease is due to the exercise of employee stock options at prices less than beginning of period net asset value.

***	Reflects impact of the different share amounts as a result of issuance or forfeiture of restricted stock during the period.

ORGANIZATION AND BASIS OF PRESENTATION (Details)	Mar. 31, 2013
ORGANIZATION AND BASIS OF PRESENTATION [Abstract]
Percentage of voting securities, minimum, Control Investments (in hundredths)	25.00%
Percentage of board representation, minimum, Control Investments (in hundredths)	50.00%
Percentage of voting securities, minimum, Affiliated Investments (in hundredths)	5.00%
Percentage of voting securities, maximum, Affiliated Investments (in hundredths)	25.00%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Mar. 31, 2013 Investment $ / shares	Dec. 31, 2012 $ / shares
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Number of investments provided by third party valuation services \| Investment	3
Net asset value percentage of investment provided by third party valuation services (in hundredths)	57.70%
Highly liquid investments original maturity, Maximum	3 months
Annual minimum distribution (in hundredths)	90.00%
Distributed net capital gains (in dollars per share) \| $ / shares	$ 20.34	$ 17.59
Corporate tax rate (in hundredths)	35.00%

INVESTMENTS (Details)	12 Months Ended
INVESTMENTS (Details)	Mar. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)
INVESTMENTS [Abstract]
Portfolio investments categorized as Level 3 (in hundredths)	70.80%	56.90%
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 406,500,000	$ 317,800,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	574,200,000	558,500,000
Summary of changes in fair value of investments [Roll Forward]
Fair value at beginning of period	317,800,000	462,500,000
Net Unrealized Appreciation (Depreciation)	90,500,000	79,700,000
New Investments	4,500,000	14,200,000
Divestures	(9,800,000)	(7,100,000)
Net Changes from Unrealized to Realized	3,500,000	(4,400,000)
Conversion of Security from Debt to Equity	0	0
Transfers out of Level 3	0	227,100,000
Fair value at end of period	406,500,000	317,800,000
Unrealized gains (losses) included in earnings that related to asset still held at report date	120,777,969	96,949,860
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	167,700,000	240,700,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Significant Observable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	406,500,000	317,800,000
Debt [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	6,600,000	11,200,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	6,600,000	11,200,000
Summary of changes in fair value of investments [Roll Forward]
Fair value at beginning of period	11,200,000	12,700,000
Net Unrealized Appreciation (Depreciation)	(5,400,000)	(4,600,000)
New Investments	4,000,000	6,600,000
Divestures	0	(1,000,000)
Net Changes from Unrealized to Realized	0	(2,500,000)
Conversion of Security from Debt to Equity	(3,200,000)	0
Transfers out of Level 3	0	0
Fair value at end of period	6,600,000	11,200,000
Debt [Member] \| Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 3,100,000	$ 8,000,000
Weighted Average Discount Rate (in hundredths)	10.77%	14.74%
Debt [Member] \| Discounted Cash Flow [Member] \| Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate (in hundredths)	10.02%	10.31%
Debt [Member] \| Discounted Cash Flow [Member] \| Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate (in hundredths)	12.00%	16.22%
Debt [Member] \| Recent Transaction Price [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 3,500,000	$ 3,200,000
Debt [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Debt [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Debt [Member] \| Significant Observable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	6,600,000	11,200,000
Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	12,200,000	11,000,000
Summary of changes in fair value of investments [Roll Forward]
Fair value at beginning of period	11,000,000	9,500,000
Net Unrealized Appreciation (Depreciation)	1,500,000	200,000
New Investments	500,000	1,300,000
Divestures	0	0
Net Changes from Unrealized to Realized	(800,000)	0
Conversion of Security from Debt to Equity	0	0
Transfers out of Level 3	0	0
Fair value at end of period	12,200,000	11,000,000
Partnership Interest [Member] \| Net Asset Value [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	12,200,000	11,000,000
Partnership Interest [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Partnership Interest [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Partnership Interest [Member] \| Significant Observable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	12,200,000	11,000,000
Preferred Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	44,600,000	33,900,000
Summary of changes in fair value of investments [Roll Forward]
Fair value at beginning of period	33,900,000	45,800,000
Net Unrealized Appreciation (Depreciation)	12,300,000	(2,900,000)
New Investments	0	6,300,000
Divestures	(9,800,000)	(6,100,000)
Net Changes from Unrealized to Realized	5,000,000	(9,200,000)
Conversion of Security from Debt to Equity	3,200,000	0
Transfers out of Level 3	0	0
Fair value at end of period	44,600,000	33,900,000
Preferred Equity [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Preferred Equity [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Preferred Equity [Member] \| Significant Observable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	44,600,000	33,900,000
Common Equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	510,800,000	502,400,000
Summary of changes in fair value of investments [Roll Forward]
Fair value at beginning of period	261,700,000	394,500,000
Net Unrealized Appreciation (Depreciation)	82,100,000	87,000,000
New Investments	0	0
Divestures	0	0
Net Changes from Unrealized to Realized	(700,000)	7,300,000
Conversion of Security from Debt to Equity	0	0
Transfers out of Level 3	0	227,100,000
Fair value at end of period	343,100,000	261,700,000
Common Equity [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	167,700,000	240,700,000
Common Equity [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	0	0
Common Equity [Member] \| Significant Observable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	343,100,000	261,700,000
Preferred & Common Equity [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	387,700,000	295,600,000
Preferred & Common Equity [Member] \| Market Approach [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 342,200,000	$ 270,200,000
Weighted Average Multiple	6.45	5.71
Preferred & Common Equity [Member] \| Market Approach [Member] \| Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Multiple	3.25	3.25
Preferred & Common Equity [Member] \| Market Approach [Member] \| Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Multiple	7.00	6.50
Preferred & Common Equity [Member] \| Market Approach [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 11,100,000	$ 11,700,000
Weighted Average Multiple	0.97	1.48
Preferred & Common Equity [Member] \| Market Approach [Member] \| Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Multiple	0.25	1.10
Preferred & Common Equity [Member] \| Market Approach [Member] \| Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Multiple	1.82	1.97
Preferred & Common Equity [Member] \| Market Approach [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 7,900,000	$ 5,500,000
Preferred & Common Equity [Member] \| Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 700,000	$ 800,000
Discount Rate (in hundredths)	1.75%	3.56%
Weighted Average Discount Rate (in hundredths)	1.75%	3.56%
Preferred & Common Equity [Member] \| Market Approach [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 3,000,000	$ 2,300,000
Multiple	1.22	1.00
Weighted Average Multiple	1.22	1.00
Preferred & Common Equity [Member] \| Market Approach [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 22,600,000	$ 5,000,000
Preferred & Common Equity [Member] \| Market Approach [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 200,000	$ 100,000

INCOME TAXES (Details) - USD ($)	12 Months Ended
INCOME TAXES (Details) - USD ($)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
INCOME TAXES [Abstract]
Annual distribution minimum (in hundredths)	90.00%
Ordinary dividends declared and paid	$ 3,025,032		$ 3,003,030
Federal excise tax (in hundredths)	4.00%
Minimum distribution to avoid excise tax (in hundredths)	98.00%
Investment company ordinary taxable income, Maximum (in hundredths)		100.00%		100.00%
Federal tax rate (in hundredths)	35.00%
Distributed net capital gains (in dollars per share)	$ 20.34	$ 17.59
Net long term unrealized capital gains, tax basis		$ 3,214,547		$ 3,568,376
Net long-term capital gains, book basis		2,319,012		4,465,088
Long term capital gains federal taxes		1,125,092		1,248,932
Schedule of Cost-method Investments [Line Items]
Net realized gain on investments	$ 89,557,814		11,826,876		$ 63,462,583
Income tax expense	$ 2,497,000		$ 2,662,000		$ 1,930,000
Period expected to maintain regulated investment company status	1 year
Net Realized Gains (Losses) on Investments [Member]
Schedule of Cost-method Investments [Line Items]
Net realized gain on investments		69,144,794		4,465,088
Capital gain distribution		(66,825,782)		0
Income tax expense		1,125,092		1,248,932
Net realized gains on investments		1,193,920		3,216,156
Net realized gains on investment (for tax purposes)		3,214,547		3,568,376
Control Investment [Member] \| Net Realized Gains (Losses) on Investments [Member]
Schedule of Cost-method Investments [Line Items]
Net realized gain on investments		0		0
Affiliated Investments [Member] \| Net Realized Gains (Losses) on Investments [Member]
Schedule of Cost-method Investments [Line Items]
Net realized gain on investments		66,037,485		0
Non-Control/Non-Affiliated Investments [Member] \| Net Realized Gains (Losses) on Investments [Member]
Schedule of Cost-method Investments [Line Items]
Net realized gain on investments		$ 3,107,309		$ 4,465,088

ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS (Details) - USD ($)	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
ACCUMULATED NET REALIZED GAINS (LOSSES) ON INVESTMENTS [Abstract]
Distributed net capital gains (in dollars per share)	$ 20.34	$ 17.59
Accumulated long term capital gains	$ 10,436,526		$ 498,438

EMPLOYEE STOCK BASED COMPENSATION PLANS (Details)										12 Months Ended
EMPLOYEE STOCK BASED COMPENSATION PLANS (Details)	Jul. 18, 2011 $ / shares shares	Jul. 19, 2010 $ / shares shares	Mar. 22, 2010 $ / shares shares	Oct. 19, 2009 $ / shares shares	Jul. 30, 2008 $ / shares	Jul. 21, 2008 $ / shares	Jul. 16, 2007 $ / shares	Jul. 17, 2006 $ / shares	May 15, 2006 $ / shares	Mar. 31, 2013 USD ($) Installment $ / shares shares	Mar. 31, 2012 USD ($) $ / shares shares	Mar. 31, 2011 USD ($) $ / shares shares	Mar. 31, 2013 USD ($) $ / shares shares	Mar. 31, 2012 $ / shares shares	Mar. 31, 2010 $ / shares shares
Weighted Average Exercise Price [Roll Forward]
Exercise price range, lower range limit (in dollars per share) \| $ / shares										$ 76.74	$ 76.74
Exercise price range, upper range limit (in dollars per share) \| $ / shares										$ 152.98	$ 152.98
Options exercisable (in shares)													63,227	87,590	54,325
Weighted average exercise price, Exercisable (in dollars per share) \| $ / shares													$ 128.47	$ 112.25	$ 115.57
New shares issued for cash \| $											$ 98,550	$ 745,200
Range 65.00 to 65.70 [Member]
Weighted Average Exercise Price [Roll Forward]
Exercise price range, lower range limit (in dollars per share) \| $ / shares											$ 65.00
Exercise price range, upper range limit (in dollars per share) \| $ / shares											$ 65.70
Options exercisable (in shares)														11,400
Range 65.70 [Member]
Weighted Average Exercise Price [Roll Forward]
Options exercisable (in shares)														1,500
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense \| $										$ 405,945	$ 1,009,922	957,168
Unrecognized compensation cost \| $													$ 897,537
Weighted average service period										1 year 2 months 12 days
Stock options [Roll Forward]
Balance at end of period (in shares)										104,227
Weighted Average Exercise Price [Roll Forward]
Balance at end of period (in dollars per share) \| $ / shares										$ 114.58
Weighted average remaining contractual term, outstanding										1 year 2 months 12 days	2 years 6 months
Weighted average remaining contractual term, exercisable										8 months 12 days
Aggregate intrinsic value, outstanding \| $													3,310,129
Aggregate intrinsic value, exercisable \| $													$ 2,169,482
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)													47,000
Options available for grant (in shares)										37,350	37,350		38,350	37,350
Compensation expense \| $										$ 109,083	$ 40,377	$ 0
Weighted average service period										4 years 1 month 6 days
Stock Awards [Abstract]
Vesting period										5 years
Restricted stock granted (in shares)										2,000
Restricted stock vested during the year (in shares)										(1,330)
Restricted stock available for issuance beginning balance (in shares)										37,350
Restricted stock granted during the year (in shares)										(2,000)
Restricted stock forfeited during the year (in shares)										3,000
Restricted stock available for issuance ending balance (in shares)										38,350	37,350
Unrecognized compensation cost \| $													$ 615,200
Summary of Share Activity [Rollforward]
Unvested at beginning of period (in shares)										9,650
Granted (in shares)										2,000
Vested (in shares)										(1,330)
Forfeited or expired (in shares)										(3,000)
Unvested at end of period (in shares)										7,320	9,650
Weighted Average Fair Value [Rollforward]
Unvested at beginning of period (in dollars per share) \| $ / shares										$ 83.60
Granted (in dollars per share) \| $ / shares										104.34
Vested (in dollars per share) \| $ / shares										83.60
Forfeited or expired (in dollars per share) \| $ / shares										83.60
Unvested at end of period (in dollars per share) \| $ / shares										$ 89.27	$ 83.60
Weighted Average Remaining Vesting Term (in Years) [Abstract]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms										3 years 9 months 18 days
Weighted Average Remaining Vesting Term, granted										4 years 9 months 18 days
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms										3 years 9 months 18 days
Restricted Stock [Member] \| Key employees [Member]
Stock Awards [Abstract]
Restricted stock granted (in shares)										9,650
Restricted stock granted during the year (in shares)										(9,650)
Phantom Stock Awards [Member]
Stock options [Roll Forward]
Balance at beginning of period (in shares)										26,000
Granted (in shares)										4,050
Vested (in shares)										0
Canceled/forfeited or expired (in shares)										(7,500)
Balance at end of period (in shares)										22,550	26,000
Weighted Average Exercise Price [Roll Forward]
Beginning of Period (in dollars per share) \| $ / shares										$ 146.95
Granted (in dollars per share) \| $ / shares										158.65
Vested (in dollars per share) \| $ / shares										0
Canceled/forfeited or expired (in dollars per share) \| $ / shares										146.95
Balance at end of period (in dollars per share) \| $ / shares										$ 149.05	$ 146.95
Weighted Average Remaining Vesting Term (in Years) [Abstract]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms										3 years 9 months 18 days
Weighted Average Remaining Vesting Term, granted										4 years 9 months 18 days
Weighted Average Remaining Vesting Term, vested										0 years
Weighted Average Remaining Vesting Term Forfeited or Expired										0 years
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms										3 years 9 months 18 days
Estimated deferred compensation liability \| $													$ 693,401
1999 Plan [Member] \| Range 76.74 to 152.98 [Member]
Weighted Average Exercise Price [Roll Forward]
Options exercisable (in shares)													63,227	87,590
Weighted average exercise price, Exercisable (in dollars per share) \| $ / shares													$ 128.47	$ 112.25
1999 Plan [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period from date of grant										10 years
Options fair value assumptions [Abstract]
Weighted Average Fair Value (in dollars per share) \| $ / shares					$ 29.93	$ 27.35	$ 41.78	$ 33.05	$ 31.28
Expected Dividend Yield (in hundredths)					0.62%	0.67%	0.39%	0.61%	0.64%
Risk-Free Interest Rate (in hundredths)					3.36%	3.41%	4.95%	5.04%	5.08%
Expected Volatility (in hundredths)					20.20%	20.20%	19.90%	21.20%	21.10%
Expected Life (in years)					5 years	5 years	5 years	7 years	7 years
Stock options [Roll Forward]
Balance at beginning of period (in shares)										95,000	96,500
Granted (in shares)										0	0
Exercised (in shares)										(19,105)	(1,500)
Canceled/forfeited or expired (in shares)										(14,395)	0
Balance at end of period (in shares)										61,500	95,000	96,500
Weighted Average Exercise Price [Roll Forward]
Beginning of Period (in dollars per share) \| $ / shares										$ 113.63	$ 114.78
Granted (in dollars per share) \| $ / shares										0	0
Exercised (in dollars per share) \| $ / shares										95.33	65.70
Canceled/forfeited or expired (in dollars per share) \| $ / shares										111.14	0
Balance at end of period (in dollars per share) \| $ / shares										$ 132.00	$ 113.63	$ 114.78
1999 Plan [Member] \| Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of annual installments on exercise of awards \| Installment										5
1999 Plan [Member] \| Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of annual installments on exercise of awards \| Installment										10
2009 Plan [Member]
Stock options [Roll Forward]
Granted (in shares)	10,000	15,000	20,000	38,750
Weighted Average Exercise Price [Roll Forward]
Granted (in dollars per share) \| $ / shares	$ 96.92	$ 88.20	$ 95.79	$ 76.74
2009 Plan [Member] \| Range 76.74 to 152.98 [Member]
Weighted Average Exercise Price [Roll Forward]
Options exercisable (in shares)													63,227	87,590
Weighted average exercise price, Exercisable (in dollars per share) \| $ / shares													$ 128.47	$ 112.25
2009 Plan [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)													140,000
Expiration period from date of grant										10 years
Number of annual installments on exercise of awards \| Installment										5
Options available for grant (in shares)										70,250			70,250
Options fair value assumptions [Abstract]
Weighted Average Fair Value (in dollars per share) \| $ / shares	$ 33.07	$ 28.58	$ 32.56	$ 25.36
Expected Dividend Yield (in hundredths)	0.83%	0.91%	0.84%	1.04%
Risk-Free Interest Rate (in hundredths)	1.45%	1.73%	2.43%	2.36%
Expected Volatility (in hundredths)	40.00%	37.50%	37.80%	37.60%
Expected Life (in years)	5 years	5 years	5 years	5 years
Stock options [Roll Forward]
Balance at beginning of period (in shares)										83,750	73,750
Granted (in shares)										0	10,000
Exercised (in shares)										(27,023)	0
Canceled/forfeited or expired (in shares)										(14,000)	0
Balance at end of period (in shares)										42,727	83,750	73,750
Weighted Average Exercise Price [Roll Forward]
Beginning of Period (in dollars per share) \| $ / shares										$ 85.75	$ 84.24
Granted (in dollars per share) \| $ / shares										0	96.92
Exercised (in dollars per share) \| $ / shares										79.82	0
Canceled/forfeited or expired (in dollars per share) \| $ / shares										85.78	0
Balance at end of period (in dollars per share) \| $ / shares										$ 89.49	$ 85.75	$ 84.24
Stock Awards [Abstract]
Restricted stock available for issuance ending balance (in shares)										70,250

EMPLOYEE STOCK OWNERSHIP PLAN (Details) - USD ($)	12 Months Ended
EMPLOYEE STOCK OWNERSHIP PLAN (Details) - USD ($)	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
EMPLOYEE STOCK OWNERSHIP PLAN [Abstract]
Service vesting period	3 years
Company contributions to the ESOP	$ 190,337	$ 222,179	$ 147,212

RETIREMENT PLANS (Details)

12 Months Ended

Mar. 31, 2013

USD ($)

Mar. 31, 2012

USD ($)

Mar. 31, 2011

USD ($)

Mar. 31, 2013

USD ($)

Component

Mar. 31, 2012

USD ($)

Mar. 31, 2011

USD ($)

RETIREMENT PLANS [Abstract]

Number of highest consecutive period for service under retirement plans

5 years

Employment period for service under retirement plans

10 years

Defined benefit plan, contributions by plan participants

$ 0

Defined benefit plan, with individual service period

65 years

$ 42,300,000

Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]

$ 50,900,000

$ 42,300,000

Prepaid pension cost included in pension assets

$ 8,762,000

$ 7,349,000

Assumptions used in estimating the actuarial present value of the projected benefit obligations [Abstract]

Discount rate (in hundredths)

4.50%

5.25%

6.00%

Rate of compensation increases (in hundredths)

5.00%

Assumptions used in estimating the net periodic (income)/expense [Abstract]

Discount rate (in hundredths)

4.50%

5.25%

6.00%

Expected return on plan assets (in hundredths)

6.50%

Rate of compensation increases (in hundredths)

5.00%

Expected Future Benefit Payments [Abstract]

Major components in balanced portfolio | Component

100.00%

Minimum [Member]

Defined benefit plan, with individual service period

55 years

Maximum [Member]

Defined benefit plan, with individual service period

70 years

Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

$ 23,800,000

Significant Other Observable Inputs (Level 2) [Member]

30,100,000

$ 23,800,000

18,500,000

Significant Observable Inputs (Level 3) [Member]

20,800,000

18,500,000

Equity Securities [Member]

$ 0

Defined Benefit Plan, Assets, Target Allocations [Abstract]

Current target allocations range minimum (in hundredths)

60.00%

Current target plan allocations range maximum (in hundredths)

80.00%

Fixed Income Securities [Member]

78.80%

77.70%

^[1]

$ 7,000,000

Defined Benefit Plan, Assets, Target Allocations [Abstract]

^[1]

$ 7,400,000

7,000,000

Current target allocations range minimum (in hundredths)

15.00%

Current target plan allocations range maximum (in hundredths)

40.00%

Fixed Income Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

14.50%

16.60%

^[1]

$ 0

Fixed Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]

^[1]

^[1]

7,000,000

Fixed Income Securities [Member] | Significant Observable Inputs (Level 3) [Member]

^[1]

7,400,000

7,000,000

^[1]

Cash and Cash Equivalents [Member]

^[1]

2,400,000

Defined Benefit Plan, Assets, Target Allocations [Abstract]

$ 3,400,000

2,400,000

Current target allocations range minimum (in hundredths)

0.00%

Current target plan allocations range maximum (in hundredths)

15.00%

Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

6.70%

5.70%

$ 2,400,000

Cash and Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]

3,400,000

2,400,000

Cash and Cash Equivalents [Member] | Significant Observable Inputs (Level 3) [Member]

Service cost-benefits earned during the year

Qualified Plan [Member]

Net pension benefit [Abstract]

259,672

133,729

$ 161,047

Interest cost on projected benefit obligation

286,639

256,558

231,332

Expected return on assets

(784,194)

(781,299)

(771,025)

Net amortization

49,803

9,377

Net pension benefit from qualified plan

(188,080)

(381,635)

(369,269)

Change in benefit obligation [Roll Forward]

Benefit obligation at beginning of year

5,136,555

4,213,349

3,450,443

Service cost

259,672

133,729

161,047

Interest cost

286,639

256,558

231,332

Actuarial gain (loss)

818,784

601,402

437,959

Benefits paid

(80,039)

(68,483)

(67,432)

Benefit obligation at end of year

6,421,611

5,136,555

4,213,349

Actual return on plan assets

12,485,876

^[2]

11,610,994

10,519,400

2,777,996

943,365

1,159,026

Benefits paid

(80,039)

(68,483)

(67,432)

Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]

15,183,833

^[2]

12,485,876

^[2]

11,610,994

Actuarial present value of benefit obligations: Accumulated benefit obligation

$ (5,636,366)

$ (4,755,675)

Projected benefit obligation for service rendered to date

(5,136,555)

(4,213,349)

(6,421,611)

(5,136,555)

$ (4,213,349)

Funded status

8,762,222

7,349,321

Unrecognized net (gain) loss from past experience different from that assumed and effects of changes in assumptions

602,598

1,818,042

Unrecognized prior service costs

122,579

131,956

ASC 715 adjustment

(725,177)

(1,949,998)

Prepaid pension cost included in pension assets

$ 8,762,222

$ 7,349,321

Shares in CSC (in shares) | shares

25,000

Expected Future Benefit Payments [Abstract]

$ 222,000

238,000

250,000

334,000

338,000

$ 1,921,000

Plan assets managed by trustee (in hundredths)

15.00%

Restoration Plan [Member]

Net pension benefit [Abstract]

Service cost-benefits earned during the year

37,052

18,163

33,216

Interest cost on projected benefit obligation

106,939

79,056

69,248

Net amortization

9,731

(15,428)

(24,507)

Net pension benefit from qualified plan

153,722

81,791

77,957

Change in benefit obligation [Roll Forward]

Benefit obligation at beginning of year

1,568,392

1,256,895

1,082,941

Service cost

37,052

18,163

33,216

Interest cost

106,939

79,056

69,248

Actuarial gain (loss)

810,303

214,278

132,940

Other adjustments

127,280

(61,450)

Benefit obligation at end of year

2,649,966

1,568,392

1,256,895

Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]

Projected benefit obligation for service rendered to date

$ (1,568,392)

$ (1,256,895)

$ (2,649,966)

$ (1,568,392)

$ (1,256,895)

Unrecognized net (gain) loss from past experience different from that assumed and effects of changes in assumptions

836,122

8,556

Unrecognized prior service costs

(122,296)

(130,798)

ASC 715 adjustment

(713,826)

122,242

Accrued pension cost included in pension liabilities

(2,649,966)

$ (1,568,392)

Expected Future Benefit Payments [Abstract]

100,000

119,000

134,000

181,000

183,000

$ 965,000

[1]	This category includes investments in investment grade fixed income instruments, primarily U.S. government obligations.
[2]	Primarily equities and bonds including approximately 25,000 shares of CSW Common Stock.

RETIREMENT PLANS, Fair Value disclosure (Details) - USD ($)
$ in Millions

12 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

$ 50.9

$ 42.3

Significant Other Observable Inputs (Level 2) [Member]

30.1

23.8

Significant Observable Inputs (Level 3) [Member]

20.8

18.5

0.0

Equity [Member]

Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

^[1]

40.1

32.9

Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]

^[1]

26.7

21.4

Equity [Member] | Significant Observable Inputs (Level 3) [Member]

^[1]

13.4

11.5

Fixed Income Securities [Member]

^[1]

0.0

Fixed Income Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

^[2]

7.4

7.0

Fixed Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]

^[2]

0.0

Fixed Income Securities [Member] | Significant Observable Inputs (Level 3) [Member]

^[2]

7.4

7.0

Cash and Cash Equivalents [Member]

^[2]

0.0

Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]

3.4

2.4

Cash and Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]

3.4

2.4

Cash and Cash Equivalents [Member] | Significant Observable Inputs (Level 3) [Member]

0.0

$ 0.0

Common Stock [Member]

Percentage of common stock included in investments (in hundredths)

19.90%

19.70%

[1]

[2]

This category includes investments in investment grade fixed income instruments, primarily U.S. government obligations.

COMMITMENTS (Details)	12 Months Ended
COMMITMENTS (Details)	Mar. 31, 2013 USD ($) Company	Mar. 31, 2012 USD ($)	Mar. 31, 2011 USD ($)
COMMITMENTS [Abstract]
Investment in portfolio companies, Maximum	$ 13,776,042
Number of portfolio companies \| Company	8
Minimum base annual rental payments due [Abstract]
2013	$ 200,000
2014	200,000
Rental expense charged to investment income	$ 141,155	$ 117,199	$ 103,703

SOURCES OF INCOME (Details) - USD ($)

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Mar. 31, 2012

Mar. 31, 2011

Subsidiary or Equity Method Investee [Line Items]

$ 2,078,000

$ 1,980,180

$ 1,364,138

8,093,000

6,720,441

5,432,271

Realized gain (loss) on investments before income tax

633,616

771,738

$ 89,557,814

11,826,876

63,462,583

Distributed net capital gains (in dollars per share)

$ 20.34

$ 17.59

Companies more than 25% owned [Member]

Subsidiary or Equity Method Investee [Line Items]

$ 0

6,944,214

5,553,140

5,024,061

Realized gain (loss) on investments before income tax

484,800

493,967

671,867

20,861,458

(10,933,517)

70,294,097

Companies 5% to 25% owned [Member]

Subsidiary or Equity Method Investee [Line Items]

250,298

253,652

868,560

1,006,572

326,940

Realized gain (loss) on investments before income tax

66,950

59,700

13,000

66,037,485

(45,287)

(6,863,347)

Companies less than 5% owned [Member]

Subsidiary or Equity Method Investee [Line Items]

1,756,452

1,674,051

1,304,496

279,917

160,729

81,270

Realized gain (loss) on investments before income tax

111,963

79,250

2,658,871

22,805,680

31,833

Other sources, including temporary investment [Member]

Subsidiary or Equity Method Investee [Line Items]

71,136

52,477

59,642

Realized gain (loss) on investments before income tax

971

699

86,871

$ 0

Realized gain before distribution [Member]

Subsidiary or Equity Method Investee [Line Items]

2,077,886

8,092,691

Realized gain (loss) on investments before income tax

664,684

89,557,814

Distribution from Realized Gain [Member]

Subsidiary or Equity Method Investee [Line Items]

Realized gain (loss) on investments before income tax

^[1]

(77,300,714)

Realized gain after distribution [Member]

Subsidiary or Equity Method Investee [Line Items]

2,077,886

8,092,691

Realized gain (loss) on investments before income tax

664,684

$ 12,257,100

[1]	During the twelve months ended March 31, 2013, we distributed $77,300,714 or $20.34 per share of capital gains dividends.

SELECTED QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
SELECTED QUARTERLY FINANCIAL DATA [Abstract]
Net investment income (loss)	$ (2,133)	$ 4,142	$ (120)	$ 18	$ (1,878)	$ 4,385	$ 23	$ 14	$ 1,907	$ 2,544	$ 1,804
Net realized gain (loss) on investments	20,912	640	(7)	66,888	349	(2,360)	18,500	(5,911)	88,433	10,578	38,885
Net increase (decrease) in unrealized appreciation of investments	22,271	22,296	50,321	(78,521)	78,501	48,798	(44,076)	(4,588)	16,367	78,635	12,999
Increase in net assets from operations	$ 41,050	$ 27,078	$ 50,194	$ (11,615)	$ 77,092	$ 50,823	$ (25,703)	$ (10,455)	$ 106,707	$ 91,757	$ 53,688
Net increase (decrease) in net operations per share (in dollars per share)	$ 10.77	$ 7.11	$ 13.18	$ (3.05)	$ 20.53	$ 13.53	$ (6.85)	$ (2.79)	$ 28.01	$ 24.42

SELECTED PER SHARE DATA AND RATIOS (Details) - $ / shares
shares in Thousands

12 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2011

Mar. 31, 2010

Mar. 31, 2009

Per Share Data [Abstract]

Investment income (in dollars per share)

$ 2.84

$ 2.49

$ 2.01

$ 1.63

$ 3.74

Operating expenses (in dollars per share)

(2.19)

(1.78)

(1.50)

(1.04)

(0.98)

Interest expense (in dollars per share)

Income taxes (in dollars per share)

(0.15)

(0.03)

(0.04)

Net investment income (in dollars per share)

0.50

0.68

0.48

0.56

2.72

Distributions from undistributed net investment income (in dollars per share)

(0.79)

(0.80)

(3.28)

Net realized gain net of tax (in dollars per share)

23.22

2.81

10.36

0.22

2.87

Dividends from capital gains (in dollars per share)

(20.29)

Net increase (decrease) in unrealized appreciation of investments (in dollars per share)

4.30

20.93

3.46

18.88

(42.56)

Exercise of employee stock options (in dollars per share)

^[1]

(0.97)

(0.02)

(0.20)

Forfeiture/ (Issuance) of restricted stock (in dollars per share)

^[2]

(0.41)

Stock option expense (in dollars per share)

0.14

0.28

0.26

0.18

0.13

Net change in pension plan funded status (in dollars per share

0.05

(0.11)

(0.02)

0.12

(0.39)

Treasury stock (in dollars per share)

^[3]

1.40

Adjustment to initially apply ASC 715, net of tax (in dollars per share)

Increase (decrease) in net asset value (in dollars per share)

5.75

23.77

13.54

19.16

(39.11)

Net asset value, Beginning of period (in dollars per share)

167.45

143.68

130.14

110.98

150.09

Net asset value, End of period (in dollars per share)

$ 173.20

$ 167.45

$ 143.68

$ 130.14

$ 110.98

Ratios and Supplemental Data [Abstract]

Ratio of operating expenses to average net assets (in hundredths)

1.36%

1.07%

1.10%

0.87%

0.71%

Ratio of net investment income to average net assets (in hundredths)

0.31%

0.41%

0.35%

0.47%

1.96%

Portfolio turnover rate (in hundredths)

2.22%

2.15%

2.78%

1.16%

2.51%

Net asset total return (in hundredths)

27.00%

18.07%

18.40%

18.50%

(22.56%)

Shares outstanding at end of period (in shares)

3,809

3,755

3,753

3,741

[1]	Net decrease is due to the exercise of employee stock options at prices less than beginning of period net asset value.
[2]	Reflects impact of the different share amounts as a result of issuance or forfeiture of restricted stock during the period.
[3]	Net increase is due to purchases of common stock at prices less than beginning period net asset value.

SUBSEQUENT EVENTS (Details)		12 Months Ended
SUBSEQUENT EVENTS (Details)	Jun. 17, 2013 USD ($) Seat shares	Mar. 31, 2013
Restricted Stock [Member]
Subsequent Event [Line Items]
Vesting period		5 years
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of board seats \| Seat	5
Increased number of board seats \| Seat	6
Subsequent Event [Member] \| Mr. Armes [Member]
Subsequent Event [Line Items]
Cash compensation includes base pay at annual rate \| $	$ 430,000
Maximum percentage of annual cash bonus (in hundredths)	150.00%
Subsequent Event [Member] \| Restricted Stock [Member] \| Mr. Armes [Member]
Subsequent Event [Line Items]
Vesting period		5 years
Options to purchase or acquire (in shares)	1,250
Subsequent Event [Member] \| Phantom Stock Awards [Member] \| Mr. Armes [Member]
Subsequent Event [Line Items]
Vesting period		5 years
Options to purchase or acquire (in shares)	6,000
Subsequent Event [Member] \| 2009 Plan [Member] \| Stock Options [Member] \| Mr. Armes [Member]
Subsequent Event [Line Items]
Vesting period		5 years
Options to purchase or acquire (in shares)	7,500

Schedule of Investments in and Advances to Affiliates (Details)
$ / shares in Units, shares in Thousands, $ in Thousands

12 Months Ended

Mar. 31, 2013

USD ($)

$ / shares

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 8,615

^[1]

492,797

112,616

^[2]

103,229

^[3]

Control Investments [Member]

502,184

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

7,429

^[1]

283,575

88,837

^[2]

27,622

^[3]

Affiliated Investments [Member]

344,790

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

1,186

^[1]

209,222

23,779

^[2]

75,607

^[3]

RECTORSEAL CORPORATION [Member] | Control Investments [Member]

157,394

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

5,915

^[1]

166,300

72,600

^[2]

^[3]

RECTORSEAL CORPORATION [Member] | Control Investments [Member] | Common Stock [Member]

$ 238,900

Investments in and Advances to Affiliates [Line Items]

WHITMORE MANUFACTURING COMPANY [Member] | Control Investments [Member]

27,907

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 1,509

^[1]

67,200

13,300

^[2]

^[3]

WHITMORE MANUFACTURING COMPANY [Member] | Control Investments [Member] | Common Stock [Member]

$ 80,500

Investments in and Advances to Affiliates [Line Items]

HEELYS, INC. [Member] | Control Investments [Member]

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

20,498

^[2]

20,498

^[3]

HEELYS, INC. [Member] | Control Investments [Member] | Common Stock [Member]

$ 0

Investments in and Advances to Affiliates [Line Items]

MEDIA RECOVERY, INC. [Member] | Control Investments [Member] | Common Stock [Member]

9,317,310

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

15,600

^[2]

5,700

^[3]

$ 9,900

MEDIA RECOVERY, INC. [Member] | Control Investments [Member] | Series A Convertible Preferred Stock [Member]

4,000,002

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

3,100

^[2]

1,100

^[3]

Shares issued upon conversion (in shares) | shares

$ 2,000

800,000

^[4]

BALCO, INC. [Member] | Control Investments [Member]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

4,100

400

^[2]

^[3]

BALCO, INC. [Member] | Control Investments [Member] | Common Stock [Member]

$ 4,500

Investments in and Advances to Affiliates [Line Items]

BALCO, INC. [Member] | Control Investments [Member] | Class B non voting common [Member]

445,000

^[4]

Investments in and Advances to Affiliates [Line Items]

CapStar Holdings Corporation [Member] | Control Investments [Member]

60,920

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

1,668

^[2]

^[3]

$ 1,668

CapStar Holdings Corporation [Member] | Control Investments [Member] | Common Stock [Member]

1,000,000

^[4]

Investments in and Advances to Affiliates [Line Items]

$ 5,338

840

^[2]

^[3]

$ 6,178

Discovery Alliance, LLC [Member] | Control Investments [Member]

500

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

1,280

^[2]

324

^[3]

Ownership percentage (in hundredths)

$ 956

90.00%

^[4]

Humac Company [Member] | Control Investments [Member]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 5

^[1]

159

^[2]

^[3]

Humac Company [Member] | Control Investments [Member] | Common Stock [Member]

$ 188

Investments in and Advances to Affiliates [Line Items]

ALAMO GROUP INC. [Member] | Affiliated Investments [Member]

1,041,000

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 764

^[1]

85,139

23,139

^[2]

ALAMO GROUP INC. [Member] | Affiliated Investments [Member] | Common Stock [Member]

$ 108,278

Investments in and Advances to Affiliates [Line Items]

ENCORE WIRE CORPORATION [Member] | Affiliated Investments [Member]

2,830,300

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 172

^[1]

121,458

^[2]

75,507

^[3]

ENCORE WIRE CORPORATION [Member] | Affiliated Investments [Member] | Common Stock [Member]

$ 45,951

Investments in and Advances to Affiliates [Line Items]

PALLETONE, INC. [Member] | Affiliated Investments [Member]

1,312,500

^[4]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 250

^[1]

2,000

^[2]

100

^[3]

PALLETONE, INC. [Member] | Affiliated Investments [Member] | Common Stock [Member]

$ 1,900

Investments in and Advances to Affiliates [Line Items]

PALLETONE, INC. [Member] | Affiliated Investments [Member] | Senior Subordinated Notes [Member]

150,000

^[4]

Investments in and Advances to Affiliates [Line Items]

Interest rate on notes (in hundredths)

12.30%

^[4]

Amount of debt investment

$ 2,000,000

^[4]

BOXX TECHNOLOGIES, INC. [Member] | Affiliated Investments [Member]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

^[1]

600

640

^[2]

^[3]

BOXX TECHNOLOGIES, INC. [Member] | Affiliated Investments [Member] | Common Stock [Member]

$ 1,240

Investments in and Advances to Affiliates [Line Items]

Conversion price per share (in dollars per share) | $ / shares

$ 0.50

^[4]

BOXX TECHNOLOGIES, INC. [Member] | Affiliated Investments [Member] | Series B Convertible Preferred Stock [Member]

Investments in and Advances to Affiliates [Line Items]

Shares issued upon conversion (in shares) | shares

3,125,354

^[4]

WELLOGIX, INC. [Member] | Affiliated Investments [Member]

Investments in and Advances to Affiliates [Line Items]

Amount of Interest, Fees or Dividends Credited in Income

$ 0

^[1]

^[2]

^[3]