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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jul. 03, 2015
Jul. 04, 2014
Jul. 03, 2015
Jul. 04, 2014
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 | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Recipient age to expense award on grant date     59 years 6 months  
Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense $ 51,000 $ 64,000 $ 448,000 $ 544,000
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 $ 1,650,000 1,582,000 $ 3,343,000 3,168,000
Stock based compensation, holding period     4 years  
Unvested Restricted Stock Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense $ 980,000 $ 936,000 $ 4,111,000 $ 4,163,000
Stock based compensation, vesting period     4 years  
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