Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Narrative (Details)

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Long-Term Debt - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 30, 2024
Apr. 18, 2024
Mar. 30, 2024
Sep. 28, 2024
Sep. 30, 2023
Sep. 28, 2024
Sep. 30, 2023
Dec. 30, 2023
Debt Instrument [Line Items]                
Deferred finance fee amortization           $ 1.9 $ 3.1  
Unamortized debt issuance costs       $ 10.3   10.3   $ 11.8
Notes Payable | Note Payable, First Lien                
Debt Instrument [Line Items]                
Variable rate     3.00%         3.25%
Prepayment of debt   $ 21.9            
Deferred finance fee amortization   $ 0.4            
Notes Payable | Note payable, Amendment No. 7 First Lien                
Debt Instrument [Line Items]                
Variable rate       2.50%        
Deferred finance fee amortization       $ 0.5 $ 0.8 $ 1.8 $ 2.9  
Face amount $ 600.0              
Periodic repayment, percent 0.25%              
Interest rate           7.75%    
Debt related commitment fees and debt issuance costs $ 1.7              
Unamortized debt issuance costs 0.2              
Notes Payable | Note payable, Amendment No. 7 First Lien | Lenders, New And Previous Agreement                
Debt Instrument [Line Items]                
Debt outstanding $ 599.0              
Notes Payable | Note payable, Amendment No. 7 First Lien | SOFR | Maximum                
Debt Instrument [Line Items]                
Variable rate 3.00%              
Notes Payable | Note payable, Amendment No. 7 First Lien | SOFR | Minimum                
Debt Instrument [Line Items]                
Variable rate 2.50%              
Notes Payable | Note payable, Amendment No. 7 First Lien | Credit Spread Adjustment                
Debt Instrument [Line Items]                
Variable rate               0.10%
Notes Payable | Note payable, Amendment No. 7 First Lien | Base Rate                
Debt Instrument [Line Items]                
Variable rate 1.50%              
Reduction in variable rate 2.00%