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Leases - Summary of Future Minimum Lease Payments for Operating Leases (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Operating Leases Future Minimum Payments Due [Abstract]  
2019 $ 7,135
2020 6,198
2021 5,673
2022 4,125
2023 2,642
Thereafter 1,474
Total $ 27,247