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Leases - Summary of Operating Lease Liabilities (Detail)
$ in Thousands
Dec. 31, 2019
USD ($)
Leases [Abstract]  
Three months ending December 31, 2020 $ 1,395
Twelve months ending December 31, 2021 1,327
Twelve months ending December 31, 2022 1,114
Twelve months ending December 31, 2023 991
Twelve months ending December 31, 2024 655
Twelve months ending December 31, 2025 492
Thereafter 1,603
Total undiscounted cash flows 7,577
Discount (835)
Lease liabilities $ 6,742