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Note 7 - Income Taxes (Detail) - Deferred Taxes (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
--- | --- | --- | --- | ---
Net operating losses | $ 50,502 | $ 44,850 |  |
Fixed asset basis difference | 7,141 | 7,177 |  |
Contributions carryover | 2 | 2 |  |
Deferred compensation | 2,367 | 2,230 |  |
Accrued liabilities | 29 | 529 |  |
Total deferred tax assets | 60,041 | 54,788 |  |
Valuation allowance for deferred tax assets | (60,041) | (54,788) | (50,312) | (47,350)
Net deferred tax asset | $ 0 | $ 0 |  |

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