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Property and Equipment, Net, and Other Assets - Components of Property and Equipment,net,and other assets (Detail) - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Property Plant And Equipment [Abstract]    
Property and equipment, net of depreciation $ 622,752 $ 533,837
Security deposits and other assets 227,647 219,656
Property and Equipment net and other assets $ 850,399 $ 753,493