Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014	Aug. 31, 2014
Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax	$ 0	$ (1,972,000)	$ 0	$ (2,363,000)
Institute for Professional Development [Member]
Discontinued Operations [Line Items]
Proceeds from disposition					4,000,000
Net revenue		6,304,000		14,491,000
Costs and expenses		(9,470,000)		(18,224,000)
Loss from discontinued operations before income taxes		(3,166,000)		(3,733,000)
Benefit from income taxes		1,194,000		1,370,000
Loss from discontinued operations, net of tax		$ (1,972,000)		$ (2,363,000)