Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals)

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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
CONSOLIDATED BALANCE SHEETS (Unaudited)    
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 35,302,549 35,302,549
Common stock, shares outstanding (in shares) 34,384,085 34,242,581
Treasury stock, common shares (in shares) 918,464 1,059,968