Quarterly report pursuant to Section 13 or 15(d)

Series B Warrants (Details)

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Series B Warrants (Details) - Series B Warrants - $ / shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Class of Warrant or Right [Line Items]    
Dividend yield 0.00%
Volatility factor 70.00%
Risk-free interest rate 1.11%
Expected term (years) 4 years 4 months 21 days  
Weighted-average fair value of warrants granted during the periods $ 0.45