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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Nov. 30, 2016
Aug. 31, 2016
Condensed Consolidated Balance Sheets [Abstract]    
Trade and other accounts receivable, allowance for doubtful accounts $ 242 $ 394
Common stock, shares authorized 36,000,000 36,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares issued 19,653,335 19,621,820
Common stock, shares outstanding 14,127,152 14,208,338
Treasury stock, shares 5,526,183 5,413,482