9. Stock Options Valuation Assumptions (Details)
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6 Months Ended |
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Jun. 30, 2012
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Stock Options Valuation Assumptions Details | |
Risk-free interest rate, Minimum | 0.82% |
Risk-free interest rate, Maximum | 0.85% |
Expected life in years | 5 years |
Dividend yield | 0.00% |
Expected volatility, Minimum | 59.19% |
Expected volatility, Maximum | 63.64% |
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