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Warrant Liabilities (Tables)
9 Months Ended
Sep. 30, 2014
Warrant Liabilities [Abstract]  
Summary of assumptions used in connection with the valuation of warrants issued

 

  December 31, 
2013
  January 22, 
2014
  August 19, 
2014
  September 30, 
2014
 
Number of shares underlying the warrants  5,309,438   5,309,438   5,059,438   4,723,357 
Exercise price $1.65   1.65  $1.65  $1.65 
Volatility  135%  135%  130%  128%
Risk-free interest rate  1.75%  1.30%  1.25%  1.43%
Expected dividend yield  0   0   0   0 
Expected warrant life (years)  4.5   4.42   3.85   3.74 
Stock Price $1.80  $2.29  $2.05  $2.00 
Summary of fair value measurements using significant unobservable inputs (Level 3)


 

  December 31, 
2013
  Decrease 
from 
Warrants Exercised 
in 2014
  Increase in Fair Value  September 30, 
2014
 
Warrant liability $8,281,247  $(1,055,490) $203,703  $7,429,460