Segment Information (Schedule Of Revenue Disaggregated By Type Of Service) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 67,121	$ 73,373	$ 195,819	$ 203,109
Services And Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	25,699	31,856	71,731	78,552
Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenue	36,783	36,728	108,808	109,081
Royalties [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,722	3,843	12,675	13,044
Leases And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	917	946	2,605	2,432
Operating Segments [Member] \| Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	18,640	20,235	50,169	49,815
Operating Segments [Member] \| Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,215	1,259	3,254	3,371
Operating Segments [Member] \| Services And Products [Member] \| Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	6,214	9,117	14,566	16,783
Operating Segments [Member] \| Subscriptions [Member] \| Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	11,774	10,397	32,334	29,662
Operating Segments [Member] \| Royalties [Member] \| Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	652	721	3,269	3,370
Operating Segments [Member] \| Royalties [Member] \| Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	298	313	649	939
Operating Segments [Member] \| Leases And Other [Member] \| Corporate And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	917	946	2,605	2,432
Enterprise Division [Member] \| Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Revenue	47,266	51,879	142,396	149,923
Enterprise Division [Member] \| Operating Segments [Member] \| North America Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	37,054	40,592	111,711	116,439
Enterprise Division [Member] \| Operating Segments [Member] \| International Direct Office [Member]
Disaggregation of Revenue [Line Items]
Revenue	7,496	8,540	21,936	24,533
Enterprise Division [Member] \| Operating Segments [Member] \| International Licensees Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,716	2,747	8,749	8,951
Enterprise Division [Member] \| Operating Segments [Member] \| Services And Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	19,485	22,739	57,165	61,769
Enterprise Division [Member] \| Operating Segments [Member] \| Services And Products [Member] \| North America Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	14,139	16,727	42,358	44,478
Enterprise Division [Member] \| Operating Segments [Member] \| Services And Products [Member] \| International Direct Office [Member]
Disaggregation of Revenue [Line Items]
Revenue	5,266	5,955	14,597	16,918
Enterprise Division [Member] \| Operating Segments [Member] \| Services And Products [Member] \| International Licensees Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	80	57	210	373
Enterprise Division [Member] \| Operating Segments [Member] \| Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenue	25,009	26,331	76,474	79,419
Enterprise Division [Member] \| Operating Segments [Member] \| Subscriptions [Member] \| North America Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	22,534	23,490	68,353	70,968
Enterprise Division [Member] \| Operating Segments [Member] \| Subscriptions [Member] \| International Direct Office [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,182	2,538	7,213	7,491
Enterprise Division [Member] \| Operating Segments [Member] \| Subscriptions [Member] \| International Licensees Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	293	303	908	960
Enterprise Division [Member] \| Operating Segments [Member] \| Royalties [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,772	2,809	8,757	8,735
Enterprise Division [Member] \| Operating Segments [Member] \| Royalties [Member] \| North America Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	381	375	1,000	993
Enterprise Division [Member] \| Operating Segments [Member] \| Royalties [Member] \| International Direct Office [Member]
Disaggregation of Revenue [Line Items]
Revenue	48	47	126	124
Enterprise Division [Member] \| Operating Segments [Member] \| Royalties [Member] \| International Licensees Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 2,343	$ 2,387	$ 7,631	$ 7,618