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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Mar. 31, 2025
Dec. 31, 2024
Common stock, shares authorized (in shares) 170,000,000 170,000,000
Common stock, shares issued (in shares) 5,814,041 3,715,483
Common stock, shares outstanding (in shares) 5,814,041 3,715,483
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001