Quarterly report pursuant to Section 13 or 15(d)

Assumptions used to value the options granted and warrants issued using the Black-Scholes option pricing model (Details)

v3.3.0.814
Assumptions used to value the options granted and warrants issued using the Black-Scholes option pricing model (Details) - $ / shares
Sep. 30, 2015
Dec. 31, 2014
Series E and G    
Stock price volatility 111.60% 0.00%
Risk-free rate of return 4.26% 0.00%
Annual dividend yield 0.00% 0.00%
Expected life (in years) 0.5 0
Series F and H    
Stock price volatility 111.60% 0.00%
Risk-free rate of return 4.26% 0.00%
Annual dividend yield 0.00% 0.00%
Expected life (in years) 3.0 0
Mentor warrants in years 22.7 23.4
Weighted average outstanding warrant exercise price per share $ 1.87 $ 1.84