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Note 13 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended 30 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2017
Jun. 30, 2020
Income Tax Expense (Benefit), Total $ (2,948) $ 626 $ (2,746) $ 1,398    
Effective Income Tax Rate Reconciliation, Percent, Total 31.40% 23.10% 31.90% 25.20%    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent         35.00% 21.00%