SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Allowance for Doubtful Accounts
Changes in Valuation and Qualifying Accounts
Beginning balance	$ 195	$ 477
Write-downs charged against the allowance		(277)
Effect of exchange rate changes	(8)	(5)
Ending balance	187	195
Valuation Allowance for Deferred Tax Assets
Changes in Valuation and Qualifying Accounts
Beginning balance	30,983	35,414
Charged to expense	(285)	(3,908)
Net operating loss carryforward expired	(136)	(194)
Effect of exchange rate changes	1,692	(329)
Ending balance	$ 32,254	$ 30,983