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Leases - Future Minimum Rental Payments For Operating Leases (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
2020 $ 2,311  
2021 4,561  
2022 4,225  
2023 3,549  
2024 3,273  
Thereafter 17,398  
Total 35,317  
Discount for present value of expected cash flows (5,574)  
Lease liability at June 30, 2020 $ 29,743 $ 27,540