Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Loss Before Income Taxes (Detail)

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Income Taxes - Schedule of Loss Before Income Taxes (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]    
Domestic $ (7,563,300) $ (1,235,446)
Foreign (6,291,475) (8,614,536)
Loss before income taxes $ (13,854,775) $ (9,849,982)