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Stock-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 27, 2014
Jun. 28, 2013
Jun. 27, 2014
Jun. 28, 2013
Jun. 27, 2014
Stock Options [Member]
Jun. 28, 2013
Stock Options [Member]
Jun. 27, 2014
Stock Options [Member]
Jun. 28, 2013
Stock Options [Member]
Jun. 27, 2014
Employee Stock Purchase Plan [Member]
Jun. 27, 2014
Employee Stock Purchase Plan [Member]
Aug. 14, 2013
Employee Stock Purchase Plan [Member]
Jun. 27, 2014
Restricted Stock Units Outstanding [Member]
Jun. 28, 2013
Restricted Stock Units Outstanding [Member]
Jun. 27, 2014
Restricted Stock Units Outstanding [Member]
Jun. 28, 2013
Restricted Stock Units Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Expected dividend yield         0.00% 0.00% 0.00% 0.00%   0.00%          
Weighted-average fair value per share of options granted $ 2.70 $ 2.60 $ 2.35 $ 2.50                      
Fair value of options vested $ 700,000 $ 700,000 $ 2,000,000 $ 2,000,000                      
Total realized tax benefit 119,000   304,000 0                      
Issuance of restricted stocks fair value                       2,000,000 1,800,000 7,400,000 7,400,000
Discount percentage on purchase of stock                 15.00%            
Value of stock purchase rights percentage of call option                 85.00%            
Value of stock purchase rights percentage of put option                 15.00%            
Weighted-average fair value per share other than option granted                           $ 6.55  
Increase in authorized shares for ESPP                     1,000,000 0   0  
Total unamortized stock-based compensation cost related to unvested stock options and restricted stock units $ 20,600,000   $ 20,600,000                        
Remaining weighted-average amortization period     1 year 10 months 2 days