Quarterly report pursuant to Section 13 or 15(d)

Leases - Lease Cost (Details)

v3.19.3
Leases - Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 28, 2019
Leases [Abstract]    
Operating lease cost $ 5,101 $ 14,399
Short term lease costs 668 2,644
Variable lease costs 720 1,795
Amortization of right of use assets 190 425
Interest on lease liabilities $ 35 $ 78