Quarterly report pursuant to Section 13 or 15(d)

3. Loss per share (Details)

v3.5.0.2
3. Loss per share (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Numerator        
Net loss $ (3,145,154) $ (4,859,491) $ (8,359,037) $ (9,835,620)
Dividends on Series A-1, A-2 and A-4 Convertible Preferred Stock (101,729) (101,730) (302,976) (301,871)
Dividends declared on Series B-2 Convertible Preferred Stock (183,917) (278,010) (1,799,491) (884,955)
Gain on nominal warrants (1,187,183) (1,930,083)
Adjusted loss attributable to common stockholders $ (3,430,800) $ (6,426,414) $ (10,461,504) $ (12,952,529)
Denominator        
Basic and diluted weighted average common shares outstanding 14,990,816 8,958,815 14,536,893 8,529,642
Loss per share        
Basic and diluted $ (0.23) $ (0.72) $ (0.72) $ (1.52)