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Segment Information (Schedule Of EBITDA Segment) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2013
Dec. 01, 2012
Segment Reporting Information [Line Items]    
Adjusted EBITDA $ 6,021 $ 7,089
Share-based compensation (1,262) (473)
Reduction of contingent earnout liability 520  
Depreciation (784) (702)
Amortization (989) (622)
Income from operations 3,506 5,292
Interest income 143 137
Interest expense (560) (589)
Discount on related party receivable (142) (147)
Income before income taxes 2,947 4,693
Reportable Unit Assets [Member]
   
Segment Reporting Information [Line Items]    
Adjusted EBITDA 7,328 8,243
Depreciation (453) (348)
Amortization (989) (622)
Corporate And Eliminations [Member]
   
Segment Reporting Information [Line Items]    
Adjusted EBITDA (1,307) (1,154)
Depreciation $ (331) $ (354)