XML 51 R27.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stockholders' Equity (Details 2) (Warrants, USD $)
3 Months Ended
Mar. 31, 2014
Minimum [Member]
 
Exercise price $ 4.29
Expected stock price volatility 80.50%
Risk-free interest rate 0.76%
Expected Term (years) 5 years
Maximum [Member]
 
Exercise price $ 5.83
Expected stock price volatility 90.60%
Risk-free interest rate 1.53%
Expected Term (years) 10 years