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Goodwill and Intangibles - Schedule of Estimated Aggregate Annual Amortization (Detail)
$ in Thousands
Jun. 30, 2018
USD ($)
Finite Lived Intangible Assets Net Amortization Expense Rolling Maturity [Abstract]  
Remainder of 2018 $ 10,084
2019 19,685
2020 18,893
2021 17,850
2022 16,932
Thereafter $ 50,789