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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Performance Shares [Member]    
Net shares issued in satisfaction of units earned, shares (in shares) 24,070 52,353
Cash dividend declared on preferred stock, per share (in dollars per share) $ 0.328125 $ 0.328125
Cash dividends declared on common stock, per share (in dollars per share) $ 0.17 $ 0.17
Restricted stock grants, shares (in shares) 36,446 49,202
Stock grants, shares (in shares) 1,533 995
Net shares issued in satisfaction of units earned, shares (in shares) 33,604 32,068
Repurchase of treasury stock, shares (in shares) 282,370 205,163
Exercise of options, shares (in shares)   6,473