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9. Shareholders' Equity (Details)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Equity [Abstract]    
Expected life (years) 5 years 4 months 28 days 5 years 7 months 17 days
Risk-free interest rate 0.73% 1.32%
Volatility 80.00% 79.00%
Expected dividend yield 0.00% 0.00%