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Leases - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 25, 2021
Sep. 26, 2020
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash outflow from operating leases $ 14,854 $ 13,821
Operating cash outflow from finance leases 99 106
Financing cash outflow from finance leases $ 697 $ 624