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Note 10 - Commitments and Contingencies (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2022
Jun. 30, 2025
Mar. 31, 2024
Purchase Obligation     $ 3,600,000  
Product Liability Litigation [Member]        
Loss Contingency, Loss in Period $ 200,000 $ 1,450,000    
Product Liability Litigation [Member] | Minimum [Member]        
Loss Contingency, Estimate of Possible Loss       $ 1,650,000
Product Liability Litigation [Member] | Maximum [Member]        
Loss Contingency, Estimate of Possible Loss       1,950,000
Renuvion Product Liability [Member]        
Loss Contingency, Loss in Period $ 1,300,000      
Renuvion Product Liability [Member] | Minimum [Member]        
Loss Contingency, Estimate of Possible Loss       1,300,000
Renuvion Product Liability [Member] | Maximum [Member]        
Loss Contingency, Estimate of Possible Loss       $ 1,500,000