Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating leases
Operating lease cost	$ 419	$ 443
Variable lease cost	102	189
Operating lease expense	521	632
Finance leases
Amortization of right-of-use assets	45	0
Interest on lease obligations	13	0
Finance lease expense	58	0
Short-term lease rent expense	4	4
Total rent expense	583	636
Other information
Operating cash flows from operating leases	425	445
Operating cash flows from finance leases	13	0
Financing cash flows from finance leases	37	0
Right of use assets exchanged for operating lease liabilities	1,896	0
Right of use assets exchanged for finance lease liabilities	$ 460	$ 0
Weighted-average remaining lease term – operating leases	3 years 7 months 6 days	2 years 7 months 6 days
Weighted-average remaining lease term – finance leases	5 years 8 months 12 days	0 years
Weighted-average discount rate – operating leases	6.30%	6.80%
Weighted-average discount rate – finance leases	5.40%	0.00%