Quarterly report pursuant to Section 13 or 15(d)

3. Stock Options (Details)

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3. Stock Options (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Stock Options Details        
Risk free interest rate 0.75 - 1.10% 1.65 - 1.72% 0.75 - 2.31% 1.65 - 2.30 %
Dividend yield 0% 0% 0% 0%
Expected term 5 years 5 years 5-10 years 5 years
Expected volatility 62.8 % 61.7 % 62.8 - 67.9 % 61.7 - 61.9%