Annual report pursuant to Section 13 and 15(d)

Warrants (Details)

v3.8.0.1
Warrants (Details) - Warrant [Member] - $ / shares
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards, Outstanding 2,852,736 1,983,673  
Number of Awards, Issued 6,666,667 [1] 871,000 [2]  
Number of Awards, Forfeited (63,442) (1,937)  
Number of Awards, Outstanding 9,455,961 2,852,736 1,983,673
Weighted Average Exercise Price, Outstanding $ 7.45 $ 9.18  
Weighted Average Exercise Price, Issued 1.5 [3] 3.5 [4]  
Weighted Average Exercise Price, Forfeited 6 9.18  
Weighted Average Exercise Price, Outstanding $ 3.26 $ 7.45 $ 9.18
Weighted Average Remaining Term in Years, Outstanding 4 years 2 months 23 days 4 years 3 months 4 days 5 years 3 months 25 days
Weighted Average Remaining Term in Years, Issued 4 years 5 months 12 days 4 years 5 months 26 days  
Weighted Average Remaining Term in Years, Forfeited 7 years 1 month 17 days 4 years 9 months 25 days  
[1] Consists of 6,666,667 warrants to purchase 6,666,667 shares of Common Stock issued in connection with the Company’s public offering on June 14, 2017.
[2] Consists of 1,742,000 warrants to purchase 837,500 shares of Common Stock issued to the investor, and 33,500 warrant shares issued to the Sales Agent, in connection with the Company’s registered direct offering on June 30, 2016.
[3] Warrant exercise price for a full share of Common Stock.
[4] Warrant exercise price for a full share of Common Stock. Each warrant issued is for the purchase of one-half of a share of Common Stock.