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Note 1 - Significant Accounting Policies and Recent Accounting Pronouncements (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Tangible Asset Impairment Charges     $ 0 $ 0
Tangible Asset Impairment Charges     $ 0 0
Weighted Average Number of Shares Outstanding, Diluted, Adjustment 0   0  
Payments of Ordinary Dividends, Common Stock     $ 0 $ 0
Restricted Stock Units (RSUs) [Member]        
Weighted Average Number of Shares Outstanding, Diluted, Adjustment   36,551   36,551