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Goodwill and Intangible Assets, Net (Estimated Future Amortization Expense of Amortizable Intangible Assets) (Detail)
$ in Thousands
Mar. 31, 2017
USD ($)
Goodwill and Intangible Assets, Net [Abstract]  
For the year ending December 31, 2017 $ 99,752
For the year ending December 31, 2018 93,111
For the year ending December 31, 2019 83,477
For the year ending December 31, 2020 75,562
For the year ending December 31, 2021 $ 66,741