Quarterly report pursuant to Section 13 or 15(d)

Leases - Components of operating lease costs (Details)

v3.21.2
Leases - Components of operating lease costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 26, 2021
Sep. 27, 2020
Sep. 26, 2021
Sep. 27, 2020
Leases [Abstract]        
Operating lease cost $ 6,388 $ 6,500 $ 19,263 $ 19,523
Variable lease cost 270 143 809 360
Lease cost $ 6,658 $ 6,643 $ 20,072 $ 19,883