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Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense for Future Years (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]    
2017 $ 11,015  
2018 8,687  
2019 6,737  
2020 4,883  
2021 3,111  
Thereafter 3,244  
Net Carrying Amount $ 37,677 $ 35,308