Quarterly report pursuant to Section 13 or 15(d)

Leases - Lease Cost (Details)

v3.20.2
Leases - Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Leases [Abstract]        
Operating lease cost $ 4,989 $ 5,101 $ 14,283 $ 14,399
Short term lease costs 633 668 1,682 2,644
Variable lease costs 104 720 775 1,795
Amortization of right of use assets 206 190 608 425
Interest on lease liabilities $ 34 $ 35 $ 106 $ 78