XML 25 R32.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Oct. 03, 2014
Sep. 27, 2013
Oct. 03, 2014
Sep. 27, 2013
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  
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 $ 71,000 $ 100,000 $ 615,000 $ 969,000
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 1,657,000 1,557,000 4,825,000 4,695,000
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 $ 982,000 $ 844,000 $ 5,145,000 $ 5,169,000
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