Operating Lease Liabilities and Right-of-Use Assets - Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease, right-of-use asset, net	$ 142	$ 659	$ 903
Current portion of operating lease liabilities	219	492
Operating lease liabilities, net of current portion	17	236
Total operating lease liabilities	$ 236	$ 728	$ 1,432