Annual report pursuant to Section 13 and 15(d)

Unaudited Quarterly Financial Information - Summary of the Company's Unaudited Quarterly Results of Operations (Detail)

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Unaudited Quarterly Financial Information - Summary of the Company's Unaudited Quarterly Results of Operations (Detail) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                    
Revenue $ 240,234 $ 329,795 $ 242,038 $ 363,774 $ 220,504 $ 201,010 $ 303,752 $ 214,660    
Total operating expenses 2,343,886 2,024,720 6,485,551 1,492,060 1,360,155 1,162,148 2,080,663 1,783,858 $ 12,346,217 $ 6,386,824
Net loss $ (2,219,409) $ (1,863,676) $ (6,335,471) $ (1,292,777) $ (1,223,572) $ (1,029,544) $ (1,895,519) $ (1,640,884) $ (11,711,333) $ (5,789,519)
Loss per share:                    
Basic and Diluted $ (0.06) $ (0.05) $ (0.17) $ (0.04) $ (0.03) $ (0.03) $ (0.05) $ (0.05) $ (0.32) $ (0.16)