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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 29, 2017
Sep. 30, 2016
Sep. 29, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share Based Compensation Arrangement By Share Based Payment Award Options Expiration Term     10 years  
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of annual bonus settled with fully vested restricted stock unit awards     40.00%  
Unvested Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation, vesting period     4 years  
Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense $ 92,000 $ 67,000 $ 656,000 $ 496,000
Vesting percentage of stock options granted per year     25.00%  
Stock based compensation, vesting period     4 years  
Vested Restricted Stock Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense 2,155,000 1,548,000 $ 6,284,000 4,716,000
Stock based compensation, holding period     4 years  
Vested Restricted Stock Awards | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Recipient age to expense award on grant date     59 years 6 months  
Unvested Restricted Stock Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense $ 1,294,000 $ 1,115,000 $ 5,788,000 $ 5,447,000
Unvested Restricted Stock Awards | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Recipient age to expense award on grant date     59 years 6 months  
Unvested Stock Options | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Recipient age to expense award on grant date     59 years 6 months