XML 69 R59.htm IDEA: XBRL DOCUMENT v3.21.2
Leases - Summary of lease costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Operating lease costs $ 3,398 $ 3,788 $ 11,027 $ 11,427
Finance lease costs:        
Amortization of ROU assets 480 477 1,436 1,428
Interest on lease liabilities 117 131 460 415
Total lease cost $ 3,995 $ 4,396 $ 12,923 $ 13,270