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Property And Equipment (Property And Equipment) (Details) - USD ($)
$ in Thousands
Aug. 31, 2015
Aug. 31, 2014
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 63,835 $ 65,334
Less accumulated depreciation (48,336) (48,063)
Property and equipment 15,499 17,271
Land And Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,312 1,312
Buildings [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 31,556 31,556
Machinery And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 2,273 2,243
Computer Hardware And Software [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 18,327 17,685
Furniture, Fixtures, And Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 10,367 $ 12,538