Leases - Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Finance lease cost:
Amortization of right-of-use assets	$ 12	$ 7	$ 36	$ 35
Interest on lease liabilities	1	1	4	3
Total finance lease cost	13	8	40	38
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	540	320	1,563	1,064
Finance cash flows from finance leases	12	13	36	39
Right-of-use assets obtained in exchange for new operating lease liabilities	0	1,274	0	6,805
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 0	$ 0	$ 0	$ 0
Weighted-average remaining lease term (years) - operating leases	5 years 9 months 18 days	7 years 8 months 12 days	5 years 9 months 18 days	7 years 8 months 12 days
Weighted-average remaining lease term (years) - finance leases	4 years 2 months 12 days	2 years	4 years 2 months 12 days	2 years
Weighted-average discount rate - operating leases	6.00%	6.00%	6.00%	6.00%
Weighted-average discount rate - finance leases	3.00%	7.00%	3.00%	7.00%