Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Details 1)

v3.5.0.2
Net Loss Per Share (Details 1) - shares
shares in Thousands
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 6,935 3,854
Options to purchase common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 2,303 1,890
Warrants for common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 4,085 1,964
Common stock issuable upon conversion of preferred shares [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 547 0