Leases - Summary of Minimum Future Lease Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Operating leases
2021	$ 3,107
2022	10,994
2023	10,432
2024	8,887
2025	213
Thereafter	1,165
Total	34,798
Less: imputed interest	(2,965)
Finance leases
2021	6,082
2022	23,920
2023	14,218
2024	6,842
2025	5,298
Thereafter	3,386
Total	59,746
Less: imputed interest	(5,358)
Net lease obligation	$ 54,388	$ 47,911