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Debt - Schedule of Future Principal Payments for Long-Term Debt (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Debt Disclosure [Abstract]    
2023 $ 4,204  
2024 6,101  
2025 2,195  
Total future principal payments 12,500  
Less unamortized discount (1,199)  
Carrying value of long-term debt 11,301  
Add final fee due at maturity in 2023 819  
Long-term debt $ 12,120 $ 11,996