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Consolidated Statements of Assets and Liabilities (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Mar. 31, 2011
Consolidated Statements of Assets and Liabilities (Parenthetical)
Companies more than 25% owned, Cost	$ 25,702	$ 25,521
Companies 5% to 25% owned, Cost	14,049	14,049
Companies less than 5% owned, Cost	62,364	58,784
Total investments, cost	$ 102,115	$ 98,354
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	5,000,000	5,000,000
Common stock, issued (in shares)	4,337,916	4,337,916
Treasury stock (in shares)	584,878	584,878
Net asset value per share (in shares)	3,753,038	3,753,038

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Cost as of the balance date of investments, in which the the Company owns between 5% to 25% of the voting securities.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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