Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Summary of Quantitative Information Associated with Amounts Recognized in Unaudited Condensed Consolidated Financial Statements for Lease (Detail)

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Commitments and Contingencies - Summary of Quantitative Information Associated with Amounts Recognized in Unaudited Condensed Consolidated Financial Statements for Lease (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 01, 2018
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]            
Operating lease cost   $ 166 $ 166 $ 498 $ 498  
Variable lease cost   8 9 13 18  
Total operating lease expense   174 175 511 516  
Total lease payments $ 7,300 $ 118 $ 116 $ 350 $ 343  
Remaining Lease term (years)   6 years 10 months 2 days   6 years 10 months 2 days   7 years 7 months 2 days
Discount rate   15.00%   15.00%   15.00%