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Fair Value Measurements (Details 1) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Schedule of estimated fair value of the warrant liability    
Stock price $ 0.30 $ 0.42
Strike price $ 2.50 $ 2.50
Remaining contractual term (years) 1 year 7 months 6 days 2 years 1 month 6 days
Volatility 117.20% 109.60%
Adjusted volatility 112.80% 102.50%
Risk-free rate 0.30% 0.40%
Dividend yield 0.00% 0.00%