Quarterly report pursuant to Section 13 or 15(d)

3. Loss per share (Details 1)

v3.5.0.2
3. Loss per share (Details 1) - shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Antidilutive securities excluded from the calculation of diluted earnings per common share 6,730,978 7,681,357
Warrants [Member]    
Antidilutive securities excluded from the calculation of diluted earnings per common share 2,946,948 3,011,760
Convertible preferred stock [Member]    
Antidilutive securities excluded from the calculation of diluted earnings per common share 2,626,518 3,992,471
Stock options [Member]    
Antidilutive securities excluded from the calculation of diluted earnings per common share 1,157,512 677,126