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Note 12 - Leases (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2024
Operating Lease, Right-of-Use Asset $ 175 $ 175 $ 92   $ 219
Operating Lease, Liability 183 183 75   $ 219
Operating Lease, Payments   58 88 $ 88  
Operating Lease, Right-of-Use Asset, Periodic Reduction $ 70 $ 70 $ 67 62  
Operating Lease, Weighted Average Remaining Lease Term (Year) 2 years 3 months 2 years 3 months 1 year 3 months    
Operating Lease, Weighted Average Discount Rate, Percent 8.60% 8.60% 8.60%    
General and Administrative Expense [Member]          
Operating Lease, Cost   $ 82 $ 67 $ 82