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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Feb. 29, 2016
Aug. 31, 2015
Condensed Consolidated Balance Sheets [Abstract]    
Trade and other accounts receivable, allowance for doubtful accounts $ 446 $ 491
Common stock, shares authorized 36,000,000 36,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares issued 19,602,908 19,546,888
Common stock, shares outstanding 14,344,971 14,450,490
Treasury stock, shares 5,257,937 5,096,398