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Effect of Largest Customer on Sales (Detail)
3 Months Ended 9 Months Ended
Oct. 03, 2020
Oct. 05, 2019
Oct. 03, 2020
Oct. 05, 2019
Total year to date sales | Wal-Mart/Sam's Club | Customer Concentration Risk        
Entity Wide Revenue Major Customer [Line Items]        
Concentration risk percentage 21.10% 21.50% 21.30% 21.30%