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Debt and Finance Lease Obligations - Long-Term Debt (Details) - USD ($)
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Oct. 31, 2021
Debt Instrument [Line Items]        
Senior secured notes $ 300,000,000 $ 300,000,000    
Unamortized debt issuance costs (2,437,000) (3,246,000)    
Unamortized bond discount costs (2,502,000) (3,011,000)    
Long-term debt 295,061,000 293,743,000    
Finance lease obligations 292,543,000 285,426,000    
Less: current portions of finance leases 12,541,000 11,178,000    
Total debt and finance leases, net of current portions 575,063,000 567,991,000    
Long-term debt, excluding current maturities 295,061,000 293,743,000    
Amortization of debt discount and issuance costs 1,318,000 1,319,000 $ 1,153,000  
Senior Notes | 6.0% Senior Secured Notes Due 2029        
Debt Instrument [Line Items]        
Stated percentage       6.00%
Revolving Credit Facility | Line of Credit        
Debt Instrument [Line Items]        
Long-term debt, gross 0 0    
Available borrowing capacity $ 346,200,000 $ 346,500,000