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Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense (Detail)
$ in Thousands
Mar. 31, 2016
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2016 $ 29,007
2017 24,827
2018 20,876
2019 18,896
2020 16,780
2021 and thereafter $ 74,085