Segment Information (Reconciliation Of Adjusted EBITDA) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Feb. 29, 2020	Nov. 30, 2019	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Segment Reporting Information [Line Items]
Consolidated Adjusted EBITDA	$ 4,056		$ 964	$ 9,017	$ 4,133
Stock-based compensation expense	(1,793)		(1,043)	(3,644)	(1,989)
Decrease (increase) in the fair value of contingent consideration liabilities	182	$ (91)	(52)	91	(76)
Knowledge Capital wind-down costs				(389)
Licensee transition costs			(428)		(488)
Depreciation	(1,653)		(1,697)	(3,273)	(3,251)
Amortization	(1,170)		(1,300)	(2,340)	(2,538)
Loss from operations	(378)		(3,556)	(538)	(4,209)
Interest income	13		9	18	22
Interest expense	(557)		(623)	(1,162)	(1,255)
Discount accretion on related party receivable			243		258
Loss before income taxes	(922)		(3,927)	(1,682)	(5,184)
Income tax benefit	2,019		410	2,235	310
Net income (loss)	1,097		(3,517)	553	(4,874)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Consolidated Adjusted EBITDA	5,050		2,852	11,692	7,855
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Consolidated Adjusted EBITDA	$ (994)		$ (1,888)	$ (2,675)	$ (3,722)