Segment Information (Consolidated Revenues From Continuing Operations By Country) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 225,356	$ 209,758	$ 185,256
United States [Member]
Segment Reporting Information [Line Items]
Revenue	166,696	151,022	136,206
Japan [Member]
Segment Reporting Information [Line Items]
Revenue	14,227	15,670	14,482
China [Member]
Segment Reporting Information [Line Items]
Revenue	13,586	14,176	11,552
United Kingdom [Member]
Segment Reporting Information [Line Items]
Revenue	7,763	7,411	4,754
Canada [Member]
Segment Reporting Information [Line Items]
Revenue	5,424	4,722	4,372
Australia [Member]
Segment Reporting Information [Line Items]
Revenue	3,690	4,148	2,704
Western Europe [Member]
Segment Reporting Information [Line Items]
Revenue	3,211	2,016	1,679
Thailand [Member]
Segment Reporting Information [Line Items]
Revenue	1,340	1,219	1,147
Brazil [Member]
Segment Reporting Information [Line Items]
Revenue	1,141	1,285	1,423
Middle East [Member]
Segment Reporting Information [Line Items]
Revenue	951	840	723
Singapore [Member]
Segment Reporting Information [Line Items]
Revenue	877	865	722
Mexico/Central America [Member]
Segment Reporting Information [Line Items]
Revenue	842	872	751
Denmark/Scandinavia [Member]
Segment Reporting Information [Line Items]
Revenue	710	752	775
India [Member]
Segment Reporting Information [Line Items]
Revenue	707	647	701
Indonesia [Member]
Segment Reporting Information [Line Items]
Revenue	696	715	614
Central/Eastern Europe [Member]
Segment Reporting Information [Line Items]
Revenue	637	757	638
Philippines [Member]
Segment Reporting Information [Line Items]
Revenue	401	353	324
Malaysia [Member]
Segment Reporting Information [Line Items]
Revenue	356	338	364
Others [Member]
Segment Reporting Information [Line Items]
Revenue	$ 2,101	$ 1,950	$ 1,325