Segment Information (Schedule Of Segment Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Segment Reporting Information [Line Items]
Sales to external customers	$ 209,941	$ 205,165	$ 190,924
Gross profit	138,089	138,266	128,989
Adjusted EBITDA	31,858	34,420	31,402
Depreciation	4,142	3,383	3,008
Amortization	3,727	3,954	3,191
Assets	200,645	205,186	189,405
Capital Expenditures	4,641	11,261	4,418
Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales to external customers	205,580	201,238	186,770
Gross profit	135,898	136,261	126,783
Adjusted EBITDA	36,677	38,878	36,686
Depreciation	2,479	2,042	1,613
Amortization	3,727	3,954	3,191
Assets	97,114	101,067	96,958
Capital Expenditures	3,827	10,409	4,252
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales to external customers	4,361	3,927	4,154
Gross profit	2,191	2,005	2,206
Adjusted EBITDA	(4,819)	(4,458)	(5,284)
Depreciation	(1,663)	(1,341)	(1,395)
Assets	(103,531)	(104,119)	(92,447)
Capital Expenditures	814	852	166
United States/Canada [Member]
Segment Reporting Information [Line Items]
Sales to external customers	161,859	156,537	142,616
Gross profit	101,917	101,214	91,637
Adjusted EBITDA	16,405	18,990	16,419
Depreciation	2,157	1,704	1,286
Amortization	3,722	3,869	3,180
Assets	79,215	85,847	83,391
Capital Expenditures	3,618	10,008	4,106
International [Member]
Segment Reporting Information [Line Items]
Sales to external customers	43,721	44,701	44,154
Gross profit	33,981	35,047	35,146
Adjusted EBITDA	20,272	19,888	20,267
Depreciation	322	338	327
Amortization	5	85	11
Assets	17,899	15,220	13,567
Capital Expenditures	$ 209	$ 401	$ 146