XML 32 R31.htm IDEA: XBRL DOCUMENT v2.4.0.8
Share-based Compensation (Details 3) (RSUs, USD $)
3 Months Ended 6 Months Ended
Jun. 25, 2013
Jun. 26, 2012
Jun. 25, 2013
Jun. 26, 2012
Share-based compensation        
Unrecognized compensation cost of unvested stock awards (in dollars) $ 13,700,000   $ 13,700,000  
Expected weighted-average period of recognition of unrecognized compensation cost of unvested awards     1 year 3 months 18 days  
Restricted Stock Units, Shares        
Outstanding at the beginning of the period (in shares)     1,803,514  
Granted (in shares)     272,660  
Forfeited (in shares)     (13,060)  
Vested (in shares)     (685,301)  
Outstanding at the end of period (in shares) 1,377,813   1,377,813  
Restricted Stock Units, Weighted-Average Grant Date Fair Value        
Outstanding at the beginning of the period (in dollars per share)     $ 15.73  
Granted (in dollars per share)     $ 21.13  
Forfeited (in dollars per share)     $ 16.80  
Vested (in dollars per share)     $ 15.88  
Outstanding at the end of the period (in dollars per share) $ 16.71   $ 16.71  
Intrinsic value of vested awards (in dollars) 3,300,000 2,000,000 13,200,000 6,800,000
Weighted-Average Remaining Contractual Term (years)        
Weighted-Average Remaining Contractual Term     8 years 8 months 19 days  
Aggregate Intrinsic Value        
Outstanding at the end of the period (in dollars)     $ 33,743,000  
Maximum
       
Share-based compensation        
Vesting period     5 years  
Minimum
       
Share-based compensation        
Vesting period     1 year