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Stock-Based Compensation (Stock Award Activity) (Details 3) (USD $)
3 Months Ended
Mar. 29, 2013
Restricted Stock And Restricted Stock Units Time Based [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]  
Nonvested Restricted Stock Units and Awards, Beginning 80,269
Restricted Stock Units and Awards Granted 46,299
Restricted Stock Units and Awards Vested (18,528)
Restricted Stock Units and Awards Forfeited (587)
Nonvested Restricted Stock Units and Awards, Ending 107,453
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]  
Restricted Stock Units and Awards, Weighted Average Grant Date Fair Value, Beginning $ 23.48
Restricted Stock Units and Awards Granted, Weighted Average Fair Value $ 23.42
Restricted Stock Units and Awards Vested, Weighted Average Fair Value $ 21.97
Restricted Stock Units and Awards Forfeited, Weighted Average Fair Value $ 22.90
Restricted Stock Units and Awards, Weighted Average Grant Date Fair Value, Ending $ 23.72
Restricted Stock And Restricted Stock Units Performance Based [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]  
Nonvested Restricted Stock Units and Awards, Beginning 782,446
Restricted Stock Units and Awards Granted 318,169
Restricted Stock Units and Awards Vested (49,139)
Restricted Stock Units and Awards Forfeited (205,955)
Nonvested Restricted Stock Units and Awards, Ending 845,521
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]  
Restricted Stock Units and Awards, Weighted Average Grant Date Fair Value, Beginning $ 16.02
Restricted Stock Units and Awards Granted, Weighted Average Fair Value $ 15.86
Restricted Stock Units and Awards Vested, Weighted Average Fair Value $ 14.68
Restricted Stock Units and Awards Forfeited, Weighted Average Fair Value $ 14.66
Restricted Stock Units and Awards, Weighted Average Grant Date Fair Value, Ending $ 16.37