Segment Information (Schedule Of Revenue Disaggregate By Activities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Segment Reporting Information [Line Items]
Revenue	$ 198,456	$ 225,356	$ 209,758
Services And Products [Member]
Segment Reporting Information [Line Items]
Revenue	92,098	128,775	129,275
Subscriptions [Member]
Segment Reporting Information [Line Items]
Revenue	86,541	74,687	58,052
Royalties [Member]
Segment Reporting Information [Line Items]
Revenue	14,982	16,068	17,061
Leases And Other [Member]
Segment Reporting Information [Line Items]
Revenue	4,835	5,826	5,370
Operating Segments [Member] | Enterprise Division [Member]
Segment Reporting Information [Line Items]
Revenue	148,231	170,650	159,116
Operating Segments [Member] | Enterprise Division [Member] | Services And Products [Member]
Segment Reporting Information [Line Items]
Revenue	76,991	104,996	103,214
Operating Segments [Member] | Enterprise Division [Member] | Subscriptions [Member]
Segment Reporting Information [Line Items]
Revenue	60,954	52,536	42,465
Operating Segments [Member] | Enterprise Division [Member] | Royalties [Member]
Segment Reporting Information [Line Items]
Revenue	10,286	13,118	13,437
Operating Segments [Member] | Education Division [Member]
Segment Reporting Information [Line Items]
Revenue	43,405	48,880	45,272
Operating Segments [Member] | Education Division [Member] | Services And Products [Member]
Segment Reporting Information [Line Items]
Revenue	15,107	23,779	26,061
Operating Segments [Member] | Education Division [Member] | Subscriptions [Member]
Segment Reporting Information [Line Items]
Revenue	25,587	22,151	15,587
Operating Segments [Member] | Education Division [Member] | Royalties [Member]
Segment Reporting Information [Line Items]
Revenue	2,711	2,950	3,624
Operating Segments [Member] | Direct Offices [Member] | Enterprise Division [Member]
Segment Reporting Information [Line Items]
Revenue	139,780	157,754	145,890
Operating Segments [Member] | Direct Offices [Member] | Enterprise Division [Member] | Services And Products [Member]
Segment Reporting Information [Line Items]
Revenue	75,580	102,557	100,730
Operating Segments [Member] | Direct Offices [Member] | Enterprise Division [Member] | Subscriptions [Member]
Segment Reporting Information [Line Items]
Revenue	60,954	52,536	42,465
Operating Segments [Member] | Direct Offices [Member] | Enterprise Division [Member] | Royalties [Member]
Segment Reporting Information [Line Items]
Revenue	3,246	2,661	2,695
Operating Segments [Member] | International Licensees [Member] | Enterprise Division [Member]
Segment Reporting Information [Line Items]
Revenue	8,451	12,896	13,226
Operating Segments [Member] | International Licensees [Member] | Enterprise Division [Member] | Services And Products [Member]
Segment Reporting Information [Line Items]
Revenue	1,411	2,439	2,484
Operating Segments [Member] | International Licensees [Member] | Enterprise Division [Member] | Royalties [Member]
Segment Reporting Information [Line Items]
Revenue	7,040	10,457	10,742
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	6,820	5,826	5,370
Corporate And Eliminations [Member] | Royalties [Member]
Segment Reporting Information [Line Items]
Revenue	1,985
Corporate And Eliminations [Member] | Leases And Other [Member]
Segment Reporting Information [Line Items]
Revenue	$ 4,835	$ 5,826	$ 5,370