Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Details 1)

v3.4.0.3
Net Loss Per Share (Details 1) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 7,373 3,462
Options to purchase common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 1,979 1,496
Warrants for common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 4,085 1,966
Common stock issuable upon conversion of preferred shares [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities 1,309 0