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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Feb. 28, 2013	Aug. 31, 2012
Trade accounts receivable, allowance for doubtful accounts	$ 683	$ 391
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	36,000,000	36,000,000
Common stock, shares issued	19,323,124	19,208,845
Common stock, shares outstanding	15,558,855	15,697,534
Treasury stock, shares	3,764,269	3,511,311

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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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