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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Aug. 31, 2019	Aug. 31, 2018
Consolidated Balance Sheets [Abstract]
Trade and other accounts receivable, less allowance for doubtful accounts	$ 300	$ 340
Common stock, shares authorized	36,000,000	36,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	19,773,977	19,729,774
Common stock, shares outstanding	13,718,661	13,850,413
Treasury stock, shares	6,055,316	5,879,361

X

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

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-Topic 210
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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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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