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Share-based Compensation (Details 2) (Stock Options, USD $)
 3 Months Ended 6 Months Ended
Jul. 01, 2014
Jun. 25, 2013
Jul. 01, 2014
Jun. 25, 2013
Stock Options
        
Shares        
Outstanding at the beginning of the period (in shares)     1,043,438  
Forfeited (in shares)     (1,266)  
Exercised (in shares)     (165,530)  
Outstanding at the end of the period (in shares) 876,682   876,682  
Exercisable at the end of period (in shares) 876,682   876,682  
Weighted-Average Exercise Price        
Outstanding at the beginning of the period (in dollars per share)     $ 13.77  
Forfeited (in dollars per share)     $ 14.82  
Exercised (in dollars per share)     $ 11.58  
Outstanding at the end of the period (in dollars per share) $ 14.19   $ 14.19  
Exercisable at the end of the period (in dollars per share) $ 14.19   $ 14.19  
Weighted-Average Remaining Contractual Term        
Outstanding at the end of the period     1 year 11 months 12 days  
Exercisable at the end of the period     1 year 11 months 12 days  
Aggregate Intrinsic Value        
Outstanding at the end of the period (in dollars) $ 10,665,000   $ 10,665,000  
Exercisable at the end of the period (in dollars) 10,665,000   10,665,000  
Intrinsic value of options exercised (in dollars) $ 800,000 $ 2,900,000 $ 2,300,000 $ 6,200,000
Awards vested (in shares) 0 0 0 0