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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Exercise of Stock Options (shares) |  |  |  |  | 51,372 | 72,846 | 39,291
Treasury stock purchases (shares) |  |  |  |  | 266,753 | 198,976 | 301,024
Cash dividends on common stock (per share) | $ 0.16 | $ 0.16 | $ 0.14 | $ 0.14 | $ 0.64 | $ 0.64 |
Series D Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  |  | 4.50% | 4.50%
Series G Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  |  | 6.00% | 6.00%
Series H Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  | 3.50% | 3.50% | 3.50%
Series I Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  | 3.00% | 3.00% | 3.00%
Series J Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  | 8.00% |  |

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