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Fair value assumptions (Details)
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3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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| Fair value assumptions | ||
| Expected volatility | 128.36%us-gaap_FairValueAssumptionsExpectedVolatilityRate | 121.33%us-gaap_FairValueAssumptionsExpectedVolatilityRate |
| Expected volatility maximum | 128.35%fil_ExpectedVolatilityMaximum | |
| Expected dividends | 0.00%fil_ExpectedDividends | 0.00%fil_ExpectedDividends |
| Expected term | 3 years | 3 – 5 years |
| Risk free rate | 0.68%us-gaap_FairValueAssumptionsRiskFreeInterestRate | 0.41%us-gaap_FairValueAssumptionsRiskFreeInterestRate |
| Risk free rate maximum | 0.44%fil_RiskFreeRateMaximum | |
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- Definition
ExpectedDividends No definition available.
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- Definition
Expected term No definition available.
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- Definition
ExpectedVolatilityMinimum No definition available.
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- Details
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- Definition
RiskFreeRateMaximum No definition available.
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- Definition
Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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