Income Taxes (Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Income Taxes [Abstract]
Foreign income tax credit carryforward	$ 9,150	$ 8,140
Net operating loss carryforward	7,694	7,516
Sale and financing of corporate headquarters	3,939	4,431
Bonus and other accruals	1,607	1,622
Stock-based compensation	1,431	1,973
Inventory and bad debt reserves	1,328	1,376
Deferred revenue	1,268	829
Other	530	264
Total deferred income tax assets	26,947	26,151
Less: valuation allowance	(15,076)	(3,815)	$ (3,397)	$ (612)
Net deferred income tax assets	11,871	22,336
Intangible step-ups - indefinite lived	(5,494)	(5,424)
Intangible step-ups - finite lived	(2,786)	(3,406)
Intangible asset impairment and amortization	(3,306)	(2,906)
Deferred commissions	(2,231)	(2,056)
Property and equipment depreciation	(1,904)	(2,880)
Unremitted earnings of foreign subsidiaries	(354)	(456)
Other		(343)
Total deferred income tax liabilities	(16,075)	(17,471)
Net deferred income taxes asset		$ 4,865
Net deferred income taxes liability	$ (4,204)