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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Aug. 31, 2021
Aug. 31, 2020
CONSOLIDATED BALANCE SHEETS [Abstract]    
Receivables, allowance for doubtful accounts $ 94 $ 147
Other non-current assets, fair value of derivative instruments 2,464 872
Other long-term liabilities, fair value of derivative instruments 3,010 4,685
Other long-term liabilities, post-employment plans $ 7,380 $ 6,155
Common stock, par value per share $ 0.0001 $ 0.0001
Common stock, shares authorized 45,000,000 45,000,000
Common stock, shares issued 31,467,971 31,417,576
Common stock, shares outstanding 30,755,308 30,670,712
Treasury stock, shares 712,663 746,864