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Stock Based Compensation - Restricted and Unrestricted Stock Awards (Details) - Restricted And Unrestricted Stock Awards - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 28, 2014
Dec. 29, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Outstanding, shares 0 17 34 0
Outstanding, Weighted Average Fair Value $ 0.00 $ 56.80 $ 57.58 $ 0.00
Grants in period, shares 12 6 38  
Grants in period, Weighted Average Fair Value $ 60.07 $ 77.40 $ 57.50  
Vested in period, shares (27) (23) (4)  
Vested in period, Weighted Average Fair Value $ 58.24 $ 63.74 $ 56.90  
Forfeitures in Period, shares (2)      
Forfeitures in Period, Weighted Average Fair Value $ 56.80      
Outstanding and nonvested, Weighted Average Remaining Contractual Term (in years) 0 years 1 year 2 years