Commitments and Contingencies - Summary of Right of Use Assets and Lease Liabilities Related to Operating Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets And Liabilities Lessee [Abstract]
Right-of-use assets	$ 1,009	$ 959
Lease liabilities － Current	525	720
Lease liabilities － Non-Current	$ 468	$ 270
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Total lease liabilities	$ 993	$ 990