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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Feb. 29, 2020
Aug. 31, 2019
Condensed Consolidated Balance Sheets [Abstract]    
Trade and other accounts receivable, less allowance for doubtful accounts $ 330 $ 300
Common stock, shares authorized 36,000,000 36,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares issued 19,812,685 19,773,977
Common stock, shares outstanding 13,705,795 13,718,661
Treasury stock, shares 6,106,890 6,055,316