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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Common dividends declared, per share (in dollars per share) $ 0.27 $ 0.25
Issuance of stock to 401(k) plan, shares (in shares) 6,082 5,652
Repurchase of common shares, shares (in shares) 132,000 187,700
Repurchase of common shares, per share (in dollars per share) $ 30.96 $ 26.56
Common stock options exercised, shares (in shares) 4,536