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Leases - Supplemental Cash Flow (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Leases [Abstract]    
Operating cash flows from operating leases $ 2,774 $ 2,903
Operating cash flows from finance leases 4,425 3,248
Financing cash flows from finance leases 2,222 2,187
Operating leases 0 0
Finance leases $ 0 $ 787