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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
shares in Thousands
Jun. 30, 2025
Dec. 31, 2024
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 2,500 2,500
Preferred stock, shares issued (in shares) 10 10
Preferred stock, shares outstanding (in shares) 10 10
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 50,000 50,000
Common stock, shares issued (in shares) 21,657 21,495
Common stock, shares outstanding (in shares) 21,657 21,495