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Note 3 - Revenues (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Contract with Customer, Liability, Noncurrent $ 0  
Contract with Customer, Liability, Revenue Recognized 0  
Contract With Customer, Liability, Revenue Recognized During Period (0) $ 300
Contract with Customer, Asset, after Allowance for Credit Loss $ 0