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Share-Based Compensation (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended
Jun. 01, 2013
Mar. 02, 2013
May 26, 2012
Jun. 01, 2013
May 26, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Transfer of common stock shares as payment on the loans   3,300,000      
Share-based compensation expense $ 488,000   $ 1,056,000 $ 1,933,000 $ 3,301,000
Price of common stock as a percent of the average fair market value       85.00%  
Shares issued to employee stock purchase plan participants 11,435     32,249  
Stock options exercisable 675,000     675,000  
Management Stock Loan Shares [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation expense       497,000  
Unvested Share Awards [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation expense 100,000   87,000 284,000 252,000
Whole-share grant per eligible director       50,000  
Vesting period of awards       1 year  
Shares issued under terms of the award       30,672  
Unrecognized compensation expense $ 200,000     $ 200,000