Segment Information (Reconciliation Of Adjusted EBITDA) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 27, 2016	Feb. 28, 2017	Feb. 27, 2016
Segment Reporting Information [Line Items]
Consolidated Adjusted EBITDA	$ (367)	$ 4,406	$ (3,186)	$ 8,880
Stock-based compensation expense	(1,564)	(1,111)	(2,777)	(1,874)
Contract termination costs	(1,500)		(1,500)
Reduction (increase) to contingent earn out liability	924	(1,238)	1,936	(1,368)
Restructuring costs		(376)		(376)
China office start up costs	(26)		(505)
Other expenses	(306)	(139)	(593)	(139)
Depreciation	(928)	(894)	(1,794)	(1,806)
Amortization	(721)	(909)	(1,443)	(1,819)
Income (loss) from operations	(4,488)	(261)	(9,862)	1,498
Interest income	109	83	225	161
Interest expense	(623)	(552)	(1,244)	(1,093)
Income (loss) before income taxes	(5,002)	(730)	(10,881)	566
Income tax benefit (provision)	1,669	282	3,590	(224)
Net income (loss)	(3,333)	(448)	(7,291)	342
Operating Segments [Member]
Segment Reporting Information [Line Items]
Consolidated Adjusted EBITDA	1,924	6,520	1,459	12,689
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Consolidated Adjusted EBITDA	$ (2,291)	$ (2,114)	$ (4,645)	$ (3,809)