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Goodwill and Other Intangible Assets - Estimated Other Intangible Assets Amortization Expense (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2016 $ 35,000
2017 35,000
2018 35,000
2019 34,000
2020 34,000
Estimated other intangible assets amortization expense $ 173,000