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Goodwill and Intangible Assets - Schedule of Future Estimated Amortization Costs of Intangible Assets (Detail)
$ in Thousands
Sep. 30, 2015
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
Remaining three months of 2015 $ 826
Year ending December 31, 2016 3,080
Year ending December 31, 2017 2,850
Year ending December 31, 2018 2,537
Year ending December 31, 2019 and thereafter 1,938
Intangible assets, net $ 11,231