v3.19.1
Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value $ 6,564      
Common stock options available for grant (in shares) 50,000 45,445.418   44,021.264
Dividend yield (as a percent) 0.00%      
Expected volatility (as a percent) 31.50%      
Fair value of option $ 341.39      
Additional share based compensation from modification $ 687      
Stock-based compensation expense 1,590 $ 2,484 $ 2,280  
Unrecognized compensation expense for unvested options $ 3,129      
Weighted average period required for recognition of compensation expense 2 years 21 days      
Deferred stock units right to receive a cash payment $ 849 289 719  
Additional Paid-in Capital        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 1,590 $ 2,484 2,280  
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate (as a percent) 1.27%      
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate (as a percent) 3.17%      
Expected term 6 years 91 days      
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Exercised or converted, Number of Shares 200      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 47,542 42,653    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares 4,041      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 9,130      
Stock-based compensation expense $ 1,590 $ 1,984 1,513  
Time Based Vesting        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 25,046      
Performance Based Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 22,496      
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 0 $ 500 $ 767