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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Feb. 29, 2012	May 31, 2011
Condensed Consolidated Balance Sheets Parenthetical
Allowance for doubtful accounts	$ 14	$ 23
Common stock, par value	$ 0.01	$ 0.01
Common stock, issued shares	9,055	8,932
Common stock, outstanding shares	9,055	8,932

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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