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7. Share-based Compensation (Details 1)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Details 1        
Risk free interest rate 1.77% 2.14% 1.77% 2.14%
Dividend yield 0.00% 0.00% 0.00% 0.00%
Expected term (in years) 7 years 7 years 7 years 7 years
Volatility 105.00% 105.00% 105.00% 105.00%