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Supplemental Cash Flow Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 02, 2020
Sep. 27, 2019
Oct. 02, 2020
Sep. 27, 2019
Cash paid for amounts included in the measurement of operating lease liabilities:        
Operating cash flows from operating leases $ 1,508 $ 1,699 $ 5,552 $ 5,980