Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets and Liabilities, Lessee [Abstract]
Operating lease right-of-use assets	$ 1,795	$ 2,450
Finance lease right-of-use assets	0	74
Total lease assets	1,795	2,524
Operating Lease, Liability [Abstract]
Operating lease liability, current	681	773
Operating lease liability, noncurrent	1,276	1,840
Finance Lease Liability [Abstract]
Finance lease liability, current	0	69
Finance lease liability, noncurrent	0	5
Total lease liabilities	$ 1,957	$ 2,687
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Office and other equipment, net of accumulated depreciation of $4,547 and $3,675 at December 31, 2021 and 2020, respectively	Office and other equipment, net of accumulated depreciation of $4,547 and $3,675 at December 31, 2021 and 2020, respectively