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Goodwill and Intangible Assets - Estimated Annual Amortization Expense for Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]    
2017 $ 10,761  
2018 10,508  
2019 10,472  
2020 10,189  
2021 9,727  
Thereafter 30,888  
Finite lived intangible assets, Net $ 82,545 $ 93,172