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Other - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 26, 2021
Sep. 27, 2020
Sep. 26, 2021
Sep. 27, 2020
Dec. 27, 2020
Other Expense [Line Items]            
Severance liability   $ 2,600,000   $ 2,600,000   $ 5,000,000
Severance | Selling, General and Administrative Expenses            
Other Expense [Line Items]            
Severance costs   500,000 $ 0 900,000 $ 6,700,000  
Credit Facility            
Other Expense [Line Items]            
Unsecured revolving credit facility, maximum borrowing capacity $ 250,000,000          
Unsecured revolving credit facility, term (in years) 5 years          
Unsecured revolving credit facility, unused commitment fee (quarterly) 0.20%          
Line of credit facility, outstanding borrowings   0   0    
Capitalized Computer Software Costs            
Other Expense [Line Items]            
Capitalized computer software amortization   $ 2,100,000 $ 3,900,000 $ 7,100,000 $ 11,600,000