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Goodwill and Intangible Assets - Future Amortization Expense (Detail)
$ in Thousands
Jun. 30, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 - Remaining Period $ 39,926
2020 69,207
2021 58,850
2022 48,868
2023 51
Thereafter 3
Total estimated amortization expense $ 216,905