CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Nov. 30, 2021	Aug. 31, 2021
CONSOLIDATED BALANCE SHEETS [Abstract]
Receivables, allowance for doubtful accounts	$ 42	$ 94
Prepaid expenses and other current assets, fair value of derivative instruments	1,717	0
Other non-current assets, fair value of derivative instruments	4,412	2,464
Other long-term liabilities, fair value of derivative instruments	2,097	3,010
Other long-term liabilities, post-employment plans	$ 7,599	$ 7,380
Common stock, par value per share	$ 0.0001	$ 0.0001
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	31,598,389	31,467,971
Common stock, shares outstanding	30,862,489	30,755,308
Treasury stock, shares	735,900	712,663