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Stock-based Compensation Stock-based Compensation (Details) (USD $)
In Thousands, except Share data in Millions, unless otherwise specified
3 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Compensation expense $ 3,575 $ 4,429
Share-based compensation arrangement by share-based payment award, options, grants in period, gross 1.2  
Share-based compensation arrangement by share-based payment award, options, grants in period, weighted average grant date fair value $ 12.06  
Share-based compensation, nonvested awards, compensation not yet recognized, stock options 32,087  
Stock options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Compensation expense 2,468 3,985
Share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition in years 3 years 2 months 23 days  
Restricted stock and restricted stock units [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Compensation expense 749 375
Share-based compensation, nonvested awards, compensation not yet recognized, share-based awards other than options 13,657  
Share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition in years 3 years 2 months 5 days  
Nonvested performance-based share units [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Compensation expense 358 69
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period 0.1  
Share-based compensation, nonvested awards, compensation not yet recognized, share-based awards other than options $ 2,190  
Share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition in years 0 years 10 months 15 days  
Restricted stock units [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period 0.3