Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 1)

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Stockholders' Equity (Details 1) (USD $)
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Weighted average fair value of options granted    
Weighted average fair value of options granted $ 0.39 $ 0.35
Risk-free interest rate Minimum   2.54%
Risk-free interest rate 1.59%  
Risk-free interest rate Maximum   3.57%
Volatility Minimum   77.45%
Volatility 98.00%  
Volatility Maximum   117.62%
Expected life (years) 10 years 10 years