Segment Information (Consolidated Revenues From Continuing Operations By Country) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Segment Reporting Information [Line Items]
Sales	$ 190,924	$ 170,456	$ 160,804
United States [Member]
Segment Reporting Information [Line Items]
Sales	138,599	121,328	115,709
Japan [Member]
Segment Reporting Information [Line Items]
Sales	19,594	19,440	17,263
Canada [Member]
Segment Reporting Information [Line Items]
Sales	9,866	8,574	7,080
United Kingdom [Member]
Segment Reporting Information [Line Items]
Sales	5,428	5,341	5,143
Australia [Member]
Segment Reporting Information [Line Items]
Sales	4,536	3,992	5,058
China/Singapore [Member]
Segment Reporting Information [Line Items]
Sales	2,889	2,512	2,185
Mexico/Central America [Member]
Segment Reporting Information [Line Items]
Sales	955	913	837
Thailand [Member]
Segment Reporting Information [Line Items]
Sales	860	693	729
Indonesia [Member]
Segment Reporting Information [Line Items]
Sales	778	705	610
Denmark/Scandinavia [Member]
Segment Reporting Information [Line Items]
Sales	693	660	725
India [Member]
Segment Reporting Information [Line Items]
Sales	559	576	515
Brazil [Member]
Segment Reporting Information [Line Items]
Sales	495	509	567
Korea [Member]
Segment Reporting Information [Line Items]
Sales	469	607	861
Malaysia [Member]
Segment Reporting Information [Line Items]
Sales	427	458	429
Others [Member]
Segment Reporting Information [Line Items]
Sales	$ 4,776	$ 4,148	$ 3,093