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Leases - Undiscounted Cash Flows for the Finance and Operating Leases (Detail) - USD ($)
$ in Thousands
Dec. 26, 2020
Dec. 28, 2019
Operating Leased Assets [Line Items]    
2021 $ 37,917  
2022 28,774  
2023 21,759  
2024 11,827  
2025 5,580  
Total future minimum lease payments 105,857  
Less amount representing interest (1.9% to 4.4%) 5,083  
Present value of minimum lease payments 100,774  
Current maturities of long-term debt 35,415 $ 42,632
Long-term debt, excluding current maturities 65,359 $ 70,212
2021 762  
2022 697  
2023 612  
2024 528  
2025 216  
Total future minimum lease payments 2,815  
Less amount representing interest (1.9% to 4.4%) 220  
Present value of minimum lease payments 2,595  
Other current liabilities [Member]    
Operating Leased Assets [Line Items]    
Operating lease, liability, current 739  
Deferred income taxes and other noncurrent liabilities [Member]    
Operating Leased Assets [Line Items]    
Operating lease, liability, non-current $ 1,856