Segment Information (Schedule Of Segment Operations) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Segment Reporting Information [Line Items]
Revenue From External Customers	$ 67,121	$ 73,373	$ 195,819	$ 203,109
Gross Profit	51,322	56,206	149,779	155,336
Adjusted EBITDA	7,307	13,924	17,041	32,340
Operating Segments [Member] \| Education Practice [Member]
Segment Reporting Information [Line Items]
Revenue From External Customers	18,640	20,235	50,169	49,815
Gross Profit	12,227	13,270	31,968	31,420
Adjusted EBITDA	2,053	3,142	2,006	2,778
Operating Segments [Member] \| Corporate And Other [Member]
Segment Reporting Information [Line Items]
Revenue From External Customers	1,215	1,259	3,254	3,371
Gross Profit	518	419	1,403	1,130
Adjusted EBITDA	(2,609)	(2,660)	(8,318)	(7,803)
Enterprise Division [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue From External Customers	47,266	51,879	142,396	149,923
Gross Profit	38,577	42,517	116,408	122,786
Adjusted EBITDA	7,863	13,442	23,353	37,365
Enterprise Division [Member] \| Operating Segments [Member] \| North America Segment [Member]
Segment Reporting Information [Line Items]
Revenue From External Customers	37,054	40,592	111,711	116,439
Gross Profit	30,708	33,425	92,503	96,101
Adjusted EBITDA	6,201	10,822	19,788	30,421
Enterprise Division [Member] \| Operating Segments [Member] \| International Direct Office [Member]
Segment Reporting Information [Line Items]
Revenue From External Customers	7,496	8,540	21,936	24,533
Gross Profit	5,490	6,629	16,163	18,744
Adjusted EBITDA	313	1,268	(884)	2,318
Enterprise Division [Member] \| Operating Segments [Member] \| International Licensees Segment [Member]
Segment Reporting Information [Line Items]
Revenue From External Customers	2,716	2,747	8,749	8,951
Gross Profit	2,379	2,463	7,742	7,941
Adjusted EBITDA	$ 1,349	$ 1,352	$ 4,449	$ 4,626