Segment Information (Schedule Of EBITDA Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Segment Reporting Information [Line Items]
Enterprise Adjusted EBITDA	$ 31,858	$ 34,420	$ 31,402
Share-based compensation expense	(2,536)	(3,534)	(3,589)
Reduction of contingent earn out	(35)	1,579
Impaired assets	(1,302)	(363)
Restructuring costs	(587)
Depreciation	(4,142)	(3,383)	(3,008)
Amortization	(3,727)	(3,954)	(3,191)
Income from operations	19,529	24,765	21,614
Interest income	383	427	614
Interest expense	(2,137)	(2,237)	(2,332)
Discount on related party receivable	(363)	(1,196)	(519)
Other income, net			21
Income before income taxes	17,412	21,759	19,398
Operating Segments [Member]
Segment Reporting Information [Line Items]
Enterprise Adjusted EBITDA	36,677	38,878	36,686
Depreciation	(2,479)	(2,042)	(1,613)
Amortization	(3,727)	(3,954)	(3,191)
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Enterprise Adjusted EBITDA	(4,819)	(4,458)	(5,284)
Depreciation	$ 1,663	$ 1,341	$ 1,395