v3.26.1
Note 7 - Series A Redeemable Convertible Preferred Stock (Details Textual) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 06, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Oct. 15, 2025
Preferred Stock, Liquidation Preference, Value   $ 31,025   $ 31,025      
Dividends, Preferred Stock   $ 401,000 $ 0 $ 792,000 $ 0    
Preferred Stock, Convertible, Conversion Price (in dollars per share)           $ 3  
Preferred Stock, Convertible, Shares Issuable (in shares)   10,342   10,342   10,077  
Percent of Outstanding Stock Owned   19.99%   19.99%      
Preferred Stock, Redemption Amount   $ 53,392   $ 53,392   $ 38,940  
Preferred Stock, Conversion Price Using VWAP Measurement (in dollars per share)   $ 4.11   $ 4.11      
Series A Convertible Preferred Stock [Member]              
Shares Issued, Price Per Share (in dollars per share)             $ 1,000
Preferred Stock, Dividend Rate, Percentage 5.25%            
Preferred Stock, Convertible, Conversion Price (in dollars per share) $ 3            
Preferred Stock, Convertible, Shares Issuable (in shares)   10,000,000   10,000,000      
Convertible Preferred Stock, Percentage of Aggregate Purchase Price Used for Liquidated Damages           6.00%