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Leases - Summary of future minimum lease payments (Detail)
$ in Thousands
Sep. 30, 2020
USD ($)
Lessee Disclosure [Abstract]  
Remainder of 2020 $ 907
2021 2,958
2022 2,958
2023 2,958
2024 3,037
2025 and thereafter 14,604
Total future minimum lease payments (undiscounted) $ 27,422