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Goodwill and Other Intangible Assets - Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]    
Remainder of 2015 $ 1,582  
2016 2,413  
2017 1,619  
2018 1,346  
2019 1,102  
Thereafter 2,320  
Future Amortization Expense, Total $ 10,382 $ 12,125