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Share-based Compensation (Details 2) (Stock Options, USD $)
 3 Months Ended
Apr. 01, 2014
Mar. 26, 2013
Stock Options
    
Shares    
Outstanding at the beginning of the period (in shares) 1,043,438  
Exercised (in shares) (108,160)  
Outstanding at the end of the period (in shares) 935,278  
Exercisable at the end of period (in shares) 935,278  
Weighted-Average Exercise Price    
Outstanding at the beginning of the period (in dollars per share) $ 13.77  
Exercised (in dollars per share) $ 11.67  
Outstanding at the end of the period (in dollars per share) $ 14.02  
Exercisable at the end of the period (in dollars per share) $ 14.02  
Weighted-Average Remaining Contractual Term    
Outstanding at the end of the period 2 years 1 month 20 days  
Exercisable at the end of the period 2 years 1 month 20 days  
Aggregate Intrinsic Value    
Outstanding at the end of the period (in dollars) $ 11,845,000  
Exercisable at the end of the period (in dollars) 11,845,000  
Intrinsic value of options exercised (in dollars) $ 1,500,000 $ 3,300,000
Awards vested (in shares) 0 0