Segment Information (Schedule Of Segment Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Segment Reporting Information [Line Items]
Sales to External Customers	$ 37,105	$ 56,006	$ 149,463	$ 160,191
Gross Profit	26,821	39,664	107,517	111,812
Adjusted EBITDA	(3,642)	3,071	5,375	7,203
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	1,421	1,517	5,309	4,190
Gross Profit	663	550	2,772	1,429
Adjusted EBITDA	(1,734)	(2,549)	(4,410)	(6,272)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	(1,908)	5,620	9,785	13,475
Operating Segments [Member] | Enterprise Division [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	27,468	43,401	113,964	124,869
Gross Profit	21,447	32,268	86,917	91,715
Adjusted EBITDA	(372)	5,801	13,492	14,830
Operating Segments [Member] | Education Practice [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	8,216	11,088	30,190	31,132
Gross Profit	4,711	6,846	17,828	18,668
Adjusted EBITDA	(1,536)	(181)	(3,707)	(1,355)
Operating Segments [Member] | Direct Offices [Member] | Enterprise Division [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	26,760	40,387	106,844	115,271
Gross Profit	21,108	29,836	81,221	84,200
Adjusted EBITDA	352	4,520	10,796	10,703
Operating Segments [Member] | International Licensees [Member] | Enterprise Division [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	708	3,014	7,120	9,598
Gross Profit	339	2,432	5,696	7,515
Adjusted EBITDA	$ (724)	$ 1,281	$ 2,696	$ 4,127