v3.21.2
Commitments and Contingencies - Summary of Payments Associated with Obligations Under Operating Leases (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Cash Flow, Operating Activities, Lessee [Abstract]        
Operating lease payments $ 191 $ 179 $ 618 $ 490