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Commitments and Contingencies - Additional Information (Detail)
$ in Millions
12 Months Ended
Jan. 02, 2021
USD ($)
Employer
Dec. 28, 2019
USD ($)
Dec. 29, 2018
USD ($)
Loss Contingencies [Line Items]      
Rents received from subleases | $ $ 4.0 $ 4.0 $ 3.6
Percentage of associates represent by union covered by CBAs 7.00%    
Critical and declining zone fund status Less than 65 percent    
Number of employers contributing to plan | Employer 1    
Minimum [Member]      
Loss Contingencies [Line Items]      
Projected insolvent period based on active to inactive participants ratio 15 years    
Maximum [Member]      
Loss Contingencies [Line Items]      
Status or critical and declining zone plans 65.00%    
Projected insolvent period based on active to inactive participants ratio 20 years