Nature Of Operations And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Capitalized curriculum development spending	$ 2,200
Capitalized development costs	8,900	$ 10,500
Foreign currency transaction gains (losses)	(300)	(1,100)	$ (100)
Licensee royalty revenue	14,400	13,700	13,800
Advertising costs	$ 6,600	7,400	7,500
Percent likelihood of being realized upon ultimate settlement	50.00%
Goodwill, impairment loss
Covey Trade Name [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Goodwill, impairment loss	$ 0	$ 0	$ 0
Minimum [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Capitalized development costs, amortization period	3 years
Maximum [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Capitalized development costs, amortization period	5 years