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Other Intangible Assets (Estimated Amortization Expense for Finite-Lived Intangible Assets) (Detail)
$ in Thousands
Jun. 30, 2019
USD ($)
Intangible Assets Net Excluding Goodwill [Abstract]  
Remainder of 2019 $ 11,660
2020 14,933
2021 11,415
2022 10,447
2023 9,851
2024 $ 7,197