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Goodwill and Intangible Assets - Schedule of Future Estimated Amortization Expense (Detail) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
The remainder of 2017 $ 14,257  
2018 53,027  
2019 48,227  
2020 34,781  
2021 14,222  
2022 and thereafter 320,409  
Intangible assets subject to amortization, Net Book Value $ 484,923 $ 477,698