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Goodwill and Other Intangible Assets - Estimated Future Aggregate Amortization Expense of Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]    
2017 $ 25,574  
2018 24,265  
2019 22,227  
2020 20,948  
2021 18,620  
Thereafter 75,389  
Intangible Assets, Net $ 187,023 $ 205,074