Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases
Operating cash flows from operating leases	$ (1,534)	$ (1,505)
Operating cash flows from finance leases	(51)	(184)
Financing cash flows from finance leases	(2,326)	(2,855)
Right-of-use assets obtained in exchange for operating leases	$ 64	8,252
Right-of-use assets obtained in exchange for finance leases		$ 121