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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
May. 28, 2013
May. 02, 2013
Feb. 27, 2013
Apr. 30, 2015
Sep. 27, 2015
Sep. 28, 2014
Sep. 27, 2015
Sep. 28, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation expense         $ 1,100 $ 1,400 $ 4,100 $ 4,300
Share-based compensation expense net of tax         1,200 1,400 4,100 4,200
Tax benefit from option exercise             100 100
Stock Options                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Total intrinsic value of options exercised             45 300
Unrecognized compensation cost         1,400   $ 1,400  
Weighted-average period over which unrecognized compensation cost will be recognized (years)             2 years  
Restricted Stock Units (RSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Unrecognized compensation cost         4,100   $ 4,100  
Weighted-average period over which unrecognized compensation cost will be recognized (years)             1 year 8 months 24 days  
Total fair value of restricted stock awards             $ 3,800 2,900
Weighted-average grant date fair value (USD per share)             $ 12.61  
Time-Vested Cash Unit Awards                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Deferred compensation arrangement liability, current and noncurrent         700 600 $ 700 600
Deferred compensation arrangement with individual, share-based compensation expense         300 $ 300 800 900
Long Term Incentive Plan, 2014 Plan | Restricted Stock Units (RSUs)                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation expense         (500)      
LTIP 2013 Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation expense             41 63
Unrecognized compensation cost         $ 16   $ 16  
Weighted-average grant date fair value (USD per share) $ 11.56   $ 11.91          
Share based compensation arrangement by share based payment award equity instruments other than options maximum units outstanding achievable         22,500   22,500  
2015 Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares authorized for issuance       3,877,777        
Additional shares authorized for issuance       1,252,766        
2015 ESPP                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Additional shares authorized for issuance       600,000        
May 2, 2013 Cash-Based Award                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Cash-based compensation arrangement by cash-based payment award, established target cash amount   $ 400            
Cash-based compensation arrangement by cash-based payment award, fair value             $ 0  
Allocated cash-based compensation expense             $ (100) $ 31