Segment Information (Consolidated Revenues From Continuing Operations By Country) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 209,758	$ 185,256	$ 200,055
United States [Member]
Segment Reporting Information [Line Items]
Revenues	151,022	136,206	155,153
Japan [Member]
Segment Reporting Information [Line Items]
Revenues	15,670	14,482	14,997
China [Member]
Segment Reporting Information [Line Items]
Revenues	14,176	11,552	3,884
United Kingdom [Member]
Segment Reporting Information [Line Items]
Revenues	7,411	4,754	7,716
Canada [Member]
Segment Reporting Information [Line Items]
Revenues	4,722	4,372	4,357
Australia [Member]
Segment Reporting Information [Line Items]
Revenues	4,148	2,704	3,404
Western Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,016	1,679	1,503
Brazil [Member]
Segment Reporting Information [Line Items]
Revenues	1,285	1,423	319
Thailand [Member]
Segment Reporting Information [Line Items]
Revenues	1,219	1,147	1,226
Mexico/Central America [Member]
Segment Reporting Information [Line Items]
Revenues	872	751	917
Singapore [Member]
Segment Reporting Information [Line Items]
Revenues	865	722	1,143
Middle East [Member]
Segment Reporting Information [Line Items]
Revenues	840	723	584
Central/Eastern Europe [Member]
Segment Reporting Information [Line Items]
Revenues	757	638	644
Denmark/Scandinavia [Member]
Segment Reporting Information [Line Items]
Revenues	752	775	863
Indonesia [Member]
Segment Reporting Information [Line Items]
Revenues	715	614	579
India [Member]
Segment Reporting Information [Line Items]
Revenues	647	701	677
Philippines [Member]
Segment Reporting Information [Line Items]
Revenues	353	324	332
Malaysia [Member]
Segment Reporting Information [Line Items]
Revenues	338	364	384
Others [Member]
Segment Reporting Information [Line Items]
Revenues	$ 1,950	$ 1,325	$ 1,373