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Adoption of ASC 842 - Schedule Future Minimum Payments on Leases (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Leases [Abstract]  
Operating Leases, 2019 $ 6,674
Operating Leases, 2020 3,547
Operating Leases, 2021 2,364
Operating Leases, 2022 1,949
Operating Leases, 2023 1,696
Operating Leases, Thereafter 2,530
Operating Leases, Total minimum lease payments $ 18,760