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Leases - Schedule of Operating Lease Maturities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Oct. 01, 2019
Operating Lease Liabilities Payments Due [Abstract]    
Remainder of 2020 $ 243  
2021 539  
2022 537  
2023 548  
2024 559  
2025 570  
Thereafter 1,507  
Total expected operating lease payments 4,503  
Less: Imputed interest (1,140)  
Total operating lease liabilities $ 3,363 $ 2,900