Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative)(Details)

v3.10.0.1
Stock-Based Compensation (Narrative)(Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2018
Jun. 25, 2017
Jul. 01, 2018
Jun. 25, 2017
Jun. 29, 2018
Stock-based compensation $ 821 $ 757 $ 1,557 $ 1,354  
ShareBasedCompensationArrangementByShareBasedPaymentAwardEstimatedFairValueOfCommonStockPerShare         $ 30.70
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value     254    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value     $ 255    
Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     5 years    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     10 years    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 11   $ 11    
2012 Omnibus Equity Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 496,265   496,265    
2012 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 9,100   $ 9,100    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     5 years    
Minimum [Member] | Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     4 years    
Maximum [Member] | Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     5 years