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Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 8.0 $ 7.5 $ 6.4
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average grant-date fair value of options granted (in dollars per share) $ 9.64 $ 9.38 $ 7.87
Total intrinsic value of options exercised $ 0.9 $ 10.2 $ 2.5
Fair value of options vested 1.0 1.0 0.3
Aggregate intrinsic value of all outstanding options $ 2.7    
Weighted average remaining contractual term of all outstanding options 6 years    
Outstanding options, exercisable (in shares) 562    
Aggregate intrinsic value of current exercisable shares $ 2.7    
Weighted average exercise price (in dollars per share) $ 19.87    
Weighted average remaining contractual term 4 years 6 months 18 days    
Compensation for stock awards not yet recognized $ 2.2    
Compensation recognition period 3 years 9 months 18 days    
Shares available for future issuance (in shares) 344    
Employee Stock Option [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period 5 years    
Stock options expiration period 10 years    
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of options vested $ 3.7 $ 3.5 $ 4.7
Compensation for stock awards not yet recognized $ 17.5    
Compensation recognition period 3 years 2 months 24 days    
Granted (in dollars per share) $ 32.04 $ 30.97 $ 34.04
Aggregate intrinsic value $ 21.8