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Note 12 - Income Taxes and Deferred Tax Asset/Liability (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Operating Loss Carryforwards | $ 169,045 |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% | 35.00% | 35.00%
Deferred Tax Assets, Valuation Allowance | $ 58,000 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 0 | $ 0 |
Will be Recognized as Reduction of Income Tax Expense [Member] |  |  |
Unrecognized Tax Benefits | 48,300 |  |
Will be Recorded as Increase in Equity [Member] |  |  |
Unrecognized Tax Benefits | 9,700 |  |
Domestic Tax Authority [Member] |  |  |
Operating Loss Carryforwards | $ 112,900 |  |
Operating Loss Carryforward Expiration Period | 20 years |  |
Domestic Tax Authority [Member] | Earliest Tax Year [Member] |  |  |
Open Tax Year | 2013 |  |
State and Local Jurisdiction [Member] |  |  |
Operating Loss Carryforwards | $ 56,100 |  |
State and Local Jurisdiction [Member] | Earliest Tax Year [Member] |  |  |
Open Tax Year | 2012 |  |
State and Local Jurisdiction [Member] | Minimum [Member] |  |  |
Operating Loss Carryforward Expiration Period | 5 years |  |
State and Local Jurisdiction [Member] | Maximum [Member] |  |  |
Operating Loss Carryforward Expiration Period | 20 years |  |

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