Income Taxes (Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Income Taxes [Abstract]
Net operating loss carryforward	$ 9,039	$ 10,310
Sale and financing of corporate headquarters	4,919	8,420
Foreign income tax credit carryforward	6,562	4,382
Stock-based compensation	1,174	2,954
Inventory and bad debt reserves	1,046	1,643
Bonus and other accruals	1,511	1,574
Deferred revenue	236	510
Other	323	337
Total deferred income tax assets	24,810	30,130
Less: valuation allowance	(3,397)	(612)
Net deferred income tax assets	21,413	29,518
Intangible step-ups - indefinite lived	(5,427)	(8,539)
Intangible step-ups - finite lived	(4,103)	(7,607)
Intangible asset impairment and amortization	(3,023)	(4,875)
Property and equipment depreciation	(3,518)	(4,960)
Deferred commissions	(1,596)	(2,195)
Unremitted earnings of foreign subsidiaries	(380)	(492)
Other	(354)	(236)
Total deferred income tax liabilities	(18,401)	(28,904)
Net deferred income taxes asset	$ 3,012	$ 614