Segment Information (Schedule Of Revenue Disaggregated By Type Of Service) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 73,373	$ 71,441	$ 203,109	$ 202,565
Services And Products [Member]
Disaggregation of Revenue [Line Items]
Revenue	31,857	31,353	78,555	85,453
Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenue	36,728	35,325	109,078	101,264
Royalties [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,842	3,934	13,043	13,092
Leases And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	946	829	2,433	2,756
Operating Segments [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	52,035	53,217	150,335	153,242
Operating Segments [Member] | Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	20,079	17,082	49,402	45,631
Operating Segments [Member] | Direct Offices [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	49,334	50,382	141,509	144,194
Operating Segments [Member] | International Licensees [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,701	2,835	8,826	9,048
Operating Segments [Member] | Services And Products [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	22,740	24,897	61,772	70,388
Operating Segments [Member] | Services And Products [Member] | Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	9,117	6,456	16,783	15,065
Operating Segments [Member] | Services And Products [Member] | Direct Offices [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	22,682	24,808	61,398	70,112
Operating Segments [Member] | Services And Products [Member] | International Licensees [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	58	89	374	276
Operating Segments [Member] | Subscriptions [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	26,331	25,354	79,416	73,249
Operating Segments [Member] | Subscriptions [Member] | Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	10,397	9,971	29,662	28,015
Operating Segments [Member] | Subscriptions [Member] | Direct Offices [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	26,028	25,033	78,457	72,233
Operating Segments [Member] | Subscriptions [Member] | International Licensees [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	303	321	959	1,016
Operating Segments [Member] | Royalties [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,964	2,966	9,147	9,605
Operating Segments [Member] | Royalties [Member] | Education Practice [Member]
Disaggregation of Revenue [Line Items]
Revenue	565	655	2,957	2,551
Operating Segments [Member] | Royalties [Member] | Direct Offices [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	624	541	1,654	1,849
Operating Segments [Member] | Royalties [Member] | International Licensees [Member] | Enterprise Division [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,340	2,425	7,493	7,756
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,259	1,142	3,372	3,692
Corporate And Eliminations [Member] | Royalties [Member]
Disaggregation of Revenue [Line Items]
Revenue	313	313	939	936
Corporate And Eliminations [Member] | Leases And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 946	$ 829	$ 2,433	$ 2,756