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Note 17 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  | 21.00% | 35.00%
Tax Adjustments, Settlements, and Unusual Provisions | $ 900 |  |
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability | 600 |  |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount | 200 |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 0 | $ 0 | $ 0
Domestic Tax Authority [Member] |  |  |
Operating Loss Carryforwards, Total | 45,400 | 45,400 |
Operating Loss Carryforwards, Expired Between 2035 and 2036 | 36,300 | 36,300 |
Operating Loss Carryforwards, Indefinite lived | 9,100 | 9,100 |
Tax Credit Carryforward, Amount | 2,900 | 2,900 |
State and Local Jurisdiction [Member] |  |  |
Operating Loss Carryforwards, Total | 56,700 | 56,700 |
Tax Credit Carryforward, Amount | 4,200 | 4,200 |
Foreign Tax Authority [Member] |  |  |
Operating Loss Carryforwards, Total | $ 1,600 | $ 1,600 |

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