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Long-term Debt (Details) - USD ($)
$ in Millions
12 Months Ended
May 11, 2020
Aug. 07, 2017
Dec. 29, 2020
Dec. 31, 2019
Revolving Credit Facility        
Revolving credit facility, amount outstanding     $ 50.0  
Revolving credit facility, remaining borrowing capacity     32.5  
Revolving Credit Facility [Member]        
Revolving Credit Facility        
Revolving credit facility, maximum borrowing capacity   $ 200.0    
Revolving credit facility contingent increase in maximum borrowing capacity   $ 200.0 $ 200.0  
Line Of Credit Facility, Increase In Borrowing Capacity $ 82.5      
Weighted-average interest rate (as a percent)     1.98% 2.64%
Revolving credit facility, amount outstanding     $ 240.0  
Revolving Credit Facility [Member] | Minimum        
Revolving Credit Facility        
Percentage of commitment fee on unused credit facility 0.125% 0.25%    
Revolving Credit Facility [Member] | Maximum        
Revolving Credit Facility        
Percentage of commitment fee on unused credit facility 0.40%      
Revolving Credit Facility [Member] | LIBOR | Minimum        
Long-term debt        
Interest rate (as a percent) 0.875%      
Revolving Credit Facility        
Weighted-average interest rate (as a percent) 1.00%      
Revolving Credit Facility [Member] | LIBOR | Maximum        
Long-term debt        
Interest rate (as a percent) 2.25%      
Revolving Credit Facility        
Interest rate added to base rate (as a percent) 2.25% 1.50%    
Percentage of commitment fee on unused credit facility 0.50%      
Original Revolving Credit Facility [Member]        
Revolving Credit Facility        
Revolving credit facility, amount outstanding     190.0  
Revolving credit facility, remaining borrowing capacity     1.8  
Letters of credit outstanding     $ 8.2