Segment Information (Schedule Of Segment Operations) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Segment Reporting Information [Line Items]
Sales to External Customers	$ 50,461	$ 43,751	$ 144,939	$ 125,734
Gross Profit	34,916	27,341	100,528	80,680
Adjusted EBITDA	588	(18)	524	(3,204)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	49,109	42,493	141,129	121,973
Gross Profit	34,680	26,783	99,581	78,927
Adjusted EBITDA	3,573	2,734	9,446	5,039
Operating Segments [Member] \| Direct Offices [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	36,331	30,075	103,802	86,595
Gross Profit	26,444	18,626	75,886	56,425
Adjusted EBITDA	2,624	679	7,467	413
Operating Segments [Member] \| Education Practice [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	9,235	8,596	27,418	25,187
Gross Profit	5,501	5,193	16,094	14,625
Adjusted EBITDA	(723)	341	(2,273)	19
Operating Segments [Member] \| International Licensees [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	3,543	3,822	9,909	10,191
Gross Profit	2,735	2,964	7,601	7,877
Adjusted EBITDA	1,672	1,714	4,252	4,607
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	1,352	1,258	3,810	3,761
Gross Profit	236	558	947	1,753
Adjusted EBITDA	$ (2,985)	$ (2,752)	$ (8,922)	$ (8,243)

Earnings before interest, taxes, depreciation, and amortization.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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+ References

No definition available.

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