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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 27, 2019
Mar. 28, 2018
Dec. 26, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Common stock, options outstanding (shares) 2,066,976   2,102,404
Common stock, options vested (shares) 1,715,595    
Common stock, options unvested (shares) 351,381    
Stock options exercised (shares) 0    
Number of options granted at fair market value (shares) 0    
Shares granted (shares) 0    
Unvested restricted shares outstanding (shares) 468,582   490,700
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 10.83   $ 10.91
Stock-based compensation $ 488 $ 532  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price $ 7.59   $ 7.68
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price 0.00    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price $ 0.00    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period (35,428)    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price $ 12.90    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number 2,058,427    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price $ 6.83    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number 1,715,595    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price $ 6.83    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 0.00    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 0    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value $ 0.00    
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited And Expirations In Period (22,118) (25,812)  
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures And Expired Weighted Average Grant Date Fair Value $ 12.47    
Premium Options      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Common stock, options outstanding (shares) 1,381,010    
Employee Stock Option      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Unrecognized compensation expense $ 1,100    
Unrecognized compensation expense, period for recognition 3 years 26 days    
Restricted Stock      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Unrecognized compensation expense, period for recognition 2 years 9 months 20 days    
Unvested restricted shares outstanding (shares) 283,762    
Unrecognized compensation expense $ 2,700    
Performance Shares      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Unrecognized compensation expense, period for recognition 2 years 9 months 5 days    
Unvested restricted shares outstanding (shares) 72,116    
Unrecognized compensation expense $ 200    
Restricted Stock Units (RSUs)      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Unrecognized compensation expense, period for recognition 3 years 2 months 29 days    
Unvested restricted shares outstanding (shares) 112,704    
Unrecognized compensation expense $ 1,000