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Note 6 - Fair Value Measurements (Details Textual)
3 Months Ended
Apr. 02, 2025
USD ($)
Mar. 31, 2026
USD ($)
$ / shares
Mar. 31, 2025
USD ($)
Mar. 31, 2026
₪ / shares
Mar. 04, 2026
$ / shares
Amended Warrants Reclassified to Stockholders' Equity $ 7,766,000        
Warrants and Rights Outstanding   $ 55,000 $ 50,000    
Fair Value Adjustment of Warrants   $ 5,000 $ (7,780,000)    
Aerodrome Shares [Member]          
Investment Owned, Balance, Shares Purchased Price Per Share (in dollars per share) | (per share)   $ 3.154   ₪ 2.594 $ 0.26