Quarterly report pursuant to Section 13 or 15(d)

Leases - Components of operating lease costs (Details)

v3.20.2
Leases - Components of operating lease costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 27, 2020
Sep. 29, 2019
Sep. 27, 2020
Sep. 29, 2019
Leases [Abstract]        
Operating lease cost $ 6,500 $ 6,496 $ 19,523 $ 19,082
Variable lease cost 143 315 360 865
Lease cost $ 6,643 $ 6,811 $ 19,883 $ 19,947