Segment Information (Schedule Of Segment Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 28, 2018	Feb. 28, 2017
Segment Reporting Information [Line Items]
Sales to external customers	$ 46,547	$ 42,196	$ 94,479	$ 81,983
Gross profit	32,744	28,031	65,612	53,340
Adjusted EBITDA	(668)	(367)	(66)	(3,186)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales to external customers	45,328	40,922	92,020	79,480
Gross profit	32,408	27,532	64,901	52,143
Adjusted EBITDA	2,052	2,334	5,873	2,305
Operating Segments [Member] | Direct Offices [Member]
Segment Reporting Information [Line Items]
Sales to external customers	33,275	30,137	67,471	56,520
Gross profit	24,881	20,862	49,442	37,799
Adjusted EBITDA	1,765	1,495	4,843	(266)
Operating Segments [Member] | Education Practice [Member]
Segment Reporting Information [Line Items]
Sales to external customers	9,007	7,848	18,183	16,591
Gross profit	5,163	4,408	10,593	9,431
Adjusted EBITDA	(881)	(555)	(1,550)	(322)
Operating Segments [Member] | International Licensees [Member]
Segment Reporting Information [Line Items]
Sales to external customers	3,046	2,937	6,366	6,369
Gross profit	2,364	2,262	4,866	4,913
Adjusted EBITDA	1,168	1,394	2,580	2,893
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales to external customers	1,219	1,274	2,459	2,503
Gross profit	336	499	711	1,197
Adjusted EBITDA	$ (2,720)	$ (2,701)	$ (5,939)	$ (5,491)