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Stockholders’ Equity (Details 4)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dividend yield 0.00% 0.00%
Minimum [Member]    
Stock price volatility 66.00% 75.00%
Risk-free interest rate 0.56% 0.33%
Expected life of options 1 year 6 months 3 years
Maximum [Member]    
Stock price volatility 77.00% 98.00%
Risk-free interest rate 1.06% 2.12%
Expected life of options 5 years 7 years