Fair value assumptions (Details) |
6 Months Ended | |
|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
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| Fair value assumptions | ||
| Expected volatility. | 128.36% | 121.33% |
| Expected volatility maximum | 155.43% | 138.05% |
| Expected dividends | 0.00% | 0.00% |
| Expected term minimum in years | 3 | 3 |
| Expected term maximum in years | 5 | 5 |
| Risk free rate minimum | 0.0051 | 0.0041 |
| Risk free rate maximum | 1.75% | 0.47% |
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- Definition ExpectedDividends No definition available.
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- Definition Expected term maximum in years No definition available.
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- Definition Expected term minimum in years No definition available.
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- Definition ExpectedVolatility2 No definition available.
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- Definition ExpectedVolatilityMinimum No definition available.
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- Definition FairValueAssumptionsAbstract No definition available.
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- Definition RiskFreeRateMaximum No definition available.
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- Definition Risk free rate minimum No definition available.
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