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Commitments and Contingencies - Schedule of Future Minimum Office And Vehicle Lease Payments (Detail) - office and vehicle - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Commitments And Contingencies [Line Items]    
Remainder of fiscal year $ 722  
Year 1 1,213 $ 1,494
Year 2 88 1,239
Year 3   88
Total $ 2,023 $ 2,821