Quarterly report pursuant to Section 13 or 15(d)

Leases - Summary of Maturities of Operating Lease Liabilities (Detail)

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Leases - Summary of Maturities of Operating Lease Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
2020 $ 486  
2021 667  
2022 686  
2023 707  
2024 30  
Total undiscounted future minimum lease payments 2,576  
Less: Imputed interest 522  
Total operating lease liability 2,054  
Less: Current portion of operating lease liability (included in other accrued liabilities) 424 $ 407
Long-term portion of operating lease liability $ 1,630 $ 1,743