Leases - Maturity Analysis of Operating and Finance Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Operating Leases
June 30, 2022	$ 7,734
June 30, 2023	6,759
June 30, 2024	5,696
June 30, 2025	5,002
June 30, 2026	4,675
Thereafter	30,976
Total undiscounted future minimum lease payments	60,842
Less: imputed interest	(10,446)
Operating leases	50,396	$ 55,187
Finance Lease
June 30, 2022	115
June 30, 2023	117
June 30, 2024	119
June 30, 2025	121
June 30, 2026	122
Thereafter	1,164
Total undiscounted future minimum lease payments	1,758
Less: imputed interest	(203)
Finance leases	$ 1,555	$ 1,598