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Leases - Summary of Minimum Lease Commitments (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Operating Leases Future Minimum Payments Due [Abstract]  
2019 $ 9,764
2020 10,919
2021 10,114
2022 9,067
2023 8,738
2024 and thereafter 95,467
Operating Leases $ 144,069