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Segment Information (Consolidated Revenues From Continuing Operations By Country) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Segment Reporting Information [Line Items]      
Sales $ 209,941 $ 205,165 $ 190,924
United States [Member]      
Segment Reporting Information [Line Items]      
Sales 162,594 153,999 138,599
Japan [Member]      
Segment Reporting Information [Line Items]      
Sales 14,446 16,652 19,594
United Kingdom [Member]      
Segment Reporting Information [Line Items]      
Sales 8,997 6,899 5,428
Canada [Member]      
Segment Reporting Information [Line Items]      
Sales 6,460 8,780 9,866
China/Singapore [Member]      
Segment Reporting Information [Line Items]      
Sales 3,821 3,322 2,889
Australia [Member]      
Segment Reporting Information [Line Items]      
Sales 3,774 4,623 4,536
Thailand [Member]      
Segment Reporting Information [Line Items]      
Sales 1,055 860 860
Mexico/Central America [Member]      
Segment Reporting Information [Line Items]      
Sales 974 923 955
Denmark/Scandinavia [Member]      
Segment Reporting Information [Line Items]      
Sales 729 831 693
India [Member]      
Segment Reporting Information [Line Items]      
Sales 708 684 559
Middle East [Member]      
Segment Reporting Information [Line Items]      
Sales 670 594 472
Indonesia [Member]      
Segment Reporting Information [Line Items]      
Sales 651 761 778
Malaysia [Member]      
Segment Reporting Information [Line Items]      
Sales 511 405 427
Central/Eastern Europe [Member]      
Segment Reporting Information [Line Items]      
Sales 492 697 551
Brazil [Member]      
Segment Reporting Information [Line Items]      
Sales 321 595 495
Korea [Member]      
Segment Reporting Information [Line Items]      
Sales 179 725 469
Others [Member]      
Segment Reporting Information [Line Items]      
Sales $ 3,559 $ 3,815 $ 3,753