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Stock-Based Compensation (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2016
Jul. 04, 2015
Jul. 02, 2016
Jul. 04, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 1.1 $ 2.8 $ 6.4 $ 6.3
Share-based compensation arrangement by share-based payment award, granted in period, fair value     7.7 6.5
Share-based compensation arrangement by share-based payment award, granted in period, adjusted fair vale     0.7 $ 1.1
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost 4.3   $ 4.3  
Remaining requisite service period for unrecognized compensation cost (in years)     1 year 4 months 24 days  
Restricted Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost $ 1.3   $ 1.3  
Remaining requisite service period for unrecognized compensation cost (in years)     1 year 1 month 6 days