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Commitments and Contingencies - Summary of Supplemental Quantitative Information Related To Leases (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Cash Flow, Operating Activities, Lessee [Abstract]        
Operating cash flows from operating leases $ 531 $ 489 $ (654) $ (833)
ROU assets obtained in exchange for new operating lease liabilities $ 320 $ 0    
Weighted average remaining lease term in years — operating leases 2 years 3 years 1 month 6 days 2 years 9 months 18 days 3 years 9 months 18 days
Weighted average discount rate — operating leases 11.80% 12.20% 12.20% 12.20%