Leases - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating cash flows for operating leases	$ 4,358	$ 4,743
Operating cash flows for finance leases	369	410
Financing cash flows for finance leases	2,500	2,751
ROU assets obtained in exchange for new operating lease liabilities	818	3,017
ROU assets obtained in exchange for new financing lease liabilities	$ 4,329	$ 9,714