Operating and Finance Lease Liabilities - Other information related to the finance leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other information
Cash payments	$ 471	$ 255
Weighted average remaining lease term (years)	5 years 7 months 6 days	7 years 8 months 12 days
Weighted average discount rate (as a percent)	8.20%	8.80%