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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Sep. 30, 2025
Dec. 31, 2024
Preferred stock par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 150,000,000 150,000,000
Common stock, shares outstanding (in shares) 6,011,000 4,885,000
Common stock, shares issued (in shares) 6,011,000 4,885,000
Series F Preferred Stock [Member]    
Temporary Equity, Shares Issued (in shares) 1,987,000 0
Temporary Equity, Shares Outstanding (in shares) 1,987,000 0
Series B Preferred Stock [Member]    
Preferred stock, shares issued (in shares) 1,000 1,000
Preferred stock, shares outstanding (in shares) 1,000 1,000
Series D Preferred Stock [Member]    
Preferred stock, shares issued (in shares) 481,000 0
Preferred stock, shares outstanding (in shares) 481,000 0