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Leases - Schedule of Maturity of Lease Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Maturity of operating leases liabilities    
2021 $ 2,440  
2022 2,345  
2023 2,290  
2024 2,358  
2025 2,331  
Thereafter 5,851  
Total lease payments 17,615  
Less: effect of discounting (5,931)  
Present value of lease liabilities $ 11,684 $ 3,856