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Commitments and Contingencies - Summary of Lease Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Lease expense:    
Operating lease expense $ 211 $ 210
Finance lease expense:    
Depreciation of right-of-use assets 7 127
Interest expense on lease liabilities   4
Total lease expense 218 341
Cash payment information:    
Operating cash used for operating leases 206 204
Financing cash used for financing leases 8 117
Total cash paid for amounts included in the measurement of lease liabilities $ 214 $ 321