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Stock-based compensation (Details Narrative) (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 converted into stock options | 4,402,890 | |
| Employee and non-employee stock options | $ 11,000 | |
| Unrecognized compensation cost related to outstanding options | $ 63,000 | |
| Weighted average period | 2 years 1 month 6 days | |
| Common stock reserved for issuance under 2007 Incentive Plan | 53,599,046 | |
| Common stock options granted under the plan | 4,156,012 | |
| Shares available for future grants | 49,267,762 | |
| Exercise price of options | $ 0.57 | |
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Employee Stock Option [Member]
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| Stock options outstanding | 4,156,012 |
| X | ||||||||||
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- Definition
Common stock options granted under the plan. No definition available.
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| X | ||||||||||
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- Definition
No authoritative reference available. No definition available.
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| X | ||||||||||
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- Definition
Shares available for future grants. No definition available.
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| X | ||||||||||
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- Definition
No authoritative reference available. No definition available.
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| X | ||||||||||
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- Definition
No authoritative reference available. No definition available.
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| X | ||||||||||
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- Definition
Exercise price of the option. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of warrants issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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