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Debt, Commitments and Contingencies - Schedule of Future Minimum Payments under Non-cancelable Operating Lease and Reconciliation to Operating Lease Liability (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Leases Operating [Abstract]    
2021 $ 776  
2022 1,062  
2023 404  
Less: Amount representing interest (207)  
Present value of lease payments 2,035  
Less: Current portion of operating lease liability (890) $ (861)
Long-term operating lease liability, net of current portion $ 1,145 $ 1,378