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Lease, Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 29, 2019
Lease Costs    
Operating lease cost $ 4,748 $ 9,951
Finance lease cost, Depreciation of right-of-use assets 294 591
Finance lease cost, Interest on lease liabilities 32 68
Sublease income (114) (234)
Net lease cost $ 4,960 $ 10,376