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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
shares in Thousands
Jun. 30, 2023
Dec. 31, 2022
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 300,000 300,000
Common stock, shares issued (in shares) 127,459 126,495
Common stock, shares outstanding (in shares) 127,388 126,302