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7. Stock options and warrants (Details-Option activity) (Options, USD $)
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3 Months Ended | 12 Months Ended |
|---|---|---|
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Mar. 31, 2014
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Dec. 31, 2013
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Options
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| Options outstanding, beginning balance | 20,309,908 | 27,278,098 |
| Granted | 20,000 | 207,819 |
| Exercised | (20,000) | (115,000) |
| Forfeited or expired | (55,000) | (7,061,009) |
| Options outstanding, ending balance | 20,254,908 | 20,309,908 |
| Vested and exercisable | 18,111,280 | |
| Weighted Average Exercise Price, Outstanding Beggining Balance | $ 0.28 | $ 0.27 |
| Weighted Average Exercise Price, Granted | $ 0.99 | $ 1.17 |
| Weighted Average Exercise Price, Exercised | $ 0.3 | $ 0.6 |
| Weighted Average Exercise Price, Forfeited or expired | $ 1 | $ 0.25 |
| Weighted Average Exercise Price, Outstanding Ending Balance | $ 0.28 | $ 0.28 |
| Weighted Average Exercise Price, Vested and exercisable | $ 0.28 | |
| Weighted-Average Remaining Contractual Term, Outstanding | 6 years 9 months 18 days |
| X | ||||||||||
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- Definition
For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average price of options that were either forfeited or expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Gross number of share options (or share units) granted during the period. No definition available.
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| X | ||||||||||
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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| X | ||||||||||
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- Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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| X | ||||||||||
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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