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Business Segments And Foreign Operations (Net Sales And Long-Lived Assets By Geographical Area) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales $ 368,548 $ 342,784 $ 336,409
Long-Lived Assets 8,535 9,063 8,482
UNITED STATES
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 145,233 144,052 135,025
Long-Lived Assets 4,223 [1] 5,297 [1] 5,232 [1]
UNITED KINGDOM
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 26,298 23,402 26,188
GERMANY
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 26,671 [2] 21,092 [2] 26,865 [2]
Latin America [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 19,200 17,689 18,720
Other International [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 151,146 136,549 129,611
Long-Lived Assets $ 4,312 [1] $ 3,766 [1] $ 3,250 [1]
[1] Includes tangible assets or property and equipment, net, attributed to the geographic location in which such assets are located.
[2] Represents net sales from the Germanics sales region which includes Germany, Austria, Denmark, Switzerland and the Netherlands.