v3.3.1.900

Note 16 - Income Taxes (Details) - Deferred Tax Assets and Liabilities - USD ($) | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Deferred tax assets: |  |
Net operating loss and credit carryforwards | $ 30,227,000 | $ 29,431,000
Stock-based compensation | 1,199,000 | 1,193,000
Stock-based compensation | 422,000 | 558,000
Basis difference for fixed assets and intangibles | 158,000 | 174,000
Total gross deferred tax assets | 32,006,000 | 31,356,000
Valuation allowance | (32,006,000) | (31,356,000)
Net deferred tax assets | $ 0 | $ 0

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