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Stock-Based Compensation (Narrative) (Details)
$ in Thousands
3 Months Ended
Oct. 18, 2016
item
shares
Nov. 26, 2016
USD ($)
shares
Nov. 28, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   $ 1,214 $ 763
Shares issued under terms of the award | shares   13,539  
Performance Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
New shares granted | shares 183,381    
Stock-based incremental compensation expense from plan modification   $ 0  
Number of individual vesting conditions | item 6    
Number of performance measures | item 2    
Stock-based compensation expense   1,078 625
Performance Awards [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Life of awards 6 years    
Unvested Share Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   113 112
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   $ 23 $ 26
Price of common stock as a percent of the average fair market value   85.00%  
Shares issued to employee stock purchase plan participants | shares   11,043  
Tranche Four [Member] | Performance Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares awarded | shares   68,567