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Goodwill and Intangible Assets - Estimated Net Amortization Expense (Detail)
$ in Thousands
Jun. 30, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 (remaining) $ 34,538
2020 55,565
2021 47,765
2022 45,294
2023 44,942
2024 44,024
Thereafter $ 271,344