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Leases - Summary of Minimum Lease Payments Under Non-cancelable Operating Leases (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
2020 (6 months remaining) $ 1,312  
2021 2,618  
2022 2,697  
2023 2,777  
2024 2,373  
Total future minimum lease payments 11,777  
Less: discount (2,782)  
Total operating lease obligations 8,995  
Less current operating lease obligations (2,256) $ (2,393)
Noncurrent operating lease obligations $ 6,739 $ 7,840