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Note 16 - Income Taxes (Details) - Effective Income Tax Reconciliation (USD $)
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12 Months Ended | |
|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Effective Income Tax Reconciliation [Abstract] | ||
| Tax at federal statutory rate | $ (967,000) | $ (2,936,000) |
| State taxes, net of federal benefit | (160,000) | (454,000) |
| Research and development credits | (12,000) | |
| Fair market value of warrants & derivatives | (22,000) | 142,000 |
| Stock based compensation | 29,000 | 145,000 |
| Other permanent items | 1,000 | (7,000) |
| Valuation allowance | $ 1,131,000 | $ 3,110,000 |