Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative)(Details)

v3.8.0.1
Stock-Based Compensation (Narrative)(Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Apr. 01, 2018
Mar. 26, 2017
Mar. 29, 2018
Stock-based compensation $ 736 $ 597  
ShareBasedCompensationArrangementByShareBasedPaymentAwardEstimatedFairValueOfCommonStockPerShare     $ 26.20
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value 57    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 250    
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 $ 15    
2012 Omnibus Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 493,973    
2012 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 10,000    
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