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Goodwill and Intangible Assets - Remaining Estimated Amortization Expense (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2017 $ 14,377
2018 12,912
2019 11,370
2020 9,930
2021 9,834
Thereafter 14,283
Remaining amortization expense $ 72,706