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Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Exercise of stock options (shares) |  | 61,000 |
Treasury stock purchases (shares) |  | 151,753 | 515
Cash dividends on common stock (per share) | $ 0.16 | $ 0.16 | $ 0.16
Series D Preferred Stock [Member] |  |  |
Preferred stock, dividend rate |  |  | 4.50%
Series H Preferred Stock [Member] |  |  |
Preferred stock, dividend rate |  | 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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