Commitments and Contingencies - Additional details of office space lease (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Commitments and Contingencies
Operating lease - right-of-use asset	$ 1,062	$ 1,140
Operating lease liability, current	503	483
Operating lease liability, net of current portion	627	725
Total operating lease liability	$ 1,130	$ 1,208
Weighted-average remaining life (years)	2 years 2 months 1 day	2 years 4 months 9 days
Weighted-average discount rate	17.82%	17.89%