Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Aug. 31, 2011	May 31, 2011
Condensed Consolidated Balance Sheets Parenthetical
Allowance for doubtful accounts	$ 39	$ 23
Common stock, par value	$ 0.01	$ 0.01
Common stock, issued shares	8,932	8,932
Common stock, outstanding shares	8,932	8,932

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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

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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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Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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