Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Sep. 30, 2023
Dec. 31, 2022
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in shares) 3,333,333 3,333,333
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 50,000,000 50,000,000
Common stock, shares issued (in shares) 18,724,596 14,402,025
Common stock, shares outstanding (in shares) 18,724,596 14,402,025