Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Narrative (Detail)

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Commitments and Contingencies - Narrative (Detail) - USD ($)
12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Loss Contingencies [Line Items]    
Loss limit covered under self-insurance $ 250,000  
Aggregate vendors and insurers letters of credit related to product purchases and insurance coverage of product liability, workers' compensation and general liability 23,590,000  
Maximum    
Loss Contingencies [Line Items]    
Occurrences in excess for purchased catastrophic coverage (up to) 60,000  
Minimum    
Loss Contingencies [Line Items]    
Occurrences in excess for purchased catastrophic coverage (up to) 250,000  
Insurance claims    
Loss Contingencies [Line Items]    
Liability recorded for such risk insurance reserves 2,488,000  
Group health insurance claims    
Loss Contingencies [Line Items]    
Loss limit covered under self-insurance 250,000  
Liability recorded for such risk insurance reserves 2,609,000  
Anti-dumping duties    
Loss Contingencies [Line Items]    
Loss contingency accrual $ 2,446,000  
Loss contingency (income) expense   $ (3,829,000)