Leases - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating cash flows for operating leases	$ 2,949	$ 3,179
Operating cash flows for finance leases	244	275
Financing cash flows for finance leases	1,675	1,858
ROU assets obtained in exchange for new operating lease liabilities	358	2,688
ROU assets obtained in exchange for new financing lease liabilities	$ 3,147	$ 9,425