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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00% | 35.00%
Operating Loss Carryforwards, Total | $ 7,500 |  |
Unrecognized Tax Benefits, Ending Balance | 0 | $ 0 |
Income Tax Expense (Benefit), Total | $ 8,928 | 4,485 | $ 14,386
Accounting Standards Update 2016-09 [Member] |  |  |
Income Tax Expense (Benefit), Total |  | $ 1,500 | $ 400
Domestic Tax Authority [Member] |  |  |
Open Tax Year | 2016 2017 2018 |  |

X
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