Nature Of Operations And Summary Of Significant Accounting Policies (Accrued Liabilities) (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Aug. 31, 2014
Nature Of Operations And Summary Of Significant Accounting Policies [Abstract]
Unearned revenue	$ 12,752	$ 10,350
Accrued compensation	8,622	10,336
Intellectual property royalties	1,323	1,468
Other accrued liabilities	6,937	7,432
Accrued liabilities	$ 29,634	$ 29,586