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Goodwill and Intangible Assets - Estimated Net Amortization Expense (Detail)
$ in Thousands
Mar. 31, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2017 (remaining) $ 33,053
2018 42,951
2019 39,833
2020 27,940
2021 20,071
2022 17,475
Thereafter $ 155,672