Annual report pursuant to Section 13 and 15(d)

Series B Warrants (Details)

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Series B Warrants (Details) - Series B Warrants
12 Months Ended
Dec. 31, 2015
$ / shares
Class of Warrant or Right [Line Items]  
Dividend yield 0.00%
Volatility factor 70.00%
Risk-free interest rate 1.75%
Expected term (years) 4 years 7 months 10 days
Weighted-average fair value of warrants granted during the periods $ 0.46