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10. Stockholders' Equity (Details 2)
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3 Months Ended | |
|---|---|---|
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Mar. 31, 2013
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Mar. 31, 2012
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| Stockholders Equity Details 2 | ||
| Expected life (years) minimum | 3 years 6 months | 3 years 6 months |
| Expected life (years) maximum | 3 years 9 months | 0 years |
| Expected volatility minimum | 46.30% | 44.20% |
| Expected volatility maximum | 46.50% | |
| Weighted-average volatility | 46.50% | 44.20% |
| Risk-free interest rate, Minimum | 0.36% | 0.56% |
| Risk-free interest rate, Maximum | 0.44% | 0.60% |
| Dividend yield | 0.00% | 0.00% |
| Expected forfeiture rate | 3.90% | 2.00% |
| X | ||||||||||
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- Definition
Custom Element. No definition available.
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| X |