Annual report pursuant to Section 13 and 15(d)

Note 13 - Income Taxes (Details Textual)

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Note 13 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
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%
Income Taxes Receivable, Current   $ 1,861 $ 54,076  
Proceeds from Income Tax Refunds   51,833 11,126 $ 11,906
Income Taxes Paid   51 138 185
Interest Income Related to Income Tax Refunds   4,500    
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ (105,900) (63,300) (53,800)  
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount   (64,704) (53,980) $ (118,643)
Deferred Tax Assets, Valuation Allowance, Total   $ 54,436 $ 117,764  
Open Tax Year   2016 2017 2018 2019