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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jul. 01, 2016
Jun. 30, 2017
Jul. 01, 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 $ 93,000 $ 52,000 $ 564,000 $ 429,000
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 2,201,000 1,451,000 $ 4,129,000 3,168,000
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 $ 1,238,000 $ 1,206,000 $ 4,494,000 $ 4,332,000
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