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v3.21.2

Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Exercise of stock options (shares) | 31,000 |  |  |  | 67,623 | 500 |
Cash dividends on common stock (per share) | $ 0.16 | $ 0.14 | $ 0.14 | $ 0.14 |  | $ 0.14 |
Treasury stock purchases (shares) | 91,491 |  |  |  | 189,366 | 500,000 |
Cashless Stock Options Exercise [Member] |  |  |  |  |  |  |
Exercise of stock options (shares) |  |  |  |  | 31,000 |  |
Series C Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  | 6.00% |  | 6.00% |
Series D Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate | 4.50% |  |  | 4.50% | 4.50% | 4.50% | 4.50%
Series F Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  | 6.00% |  | 6.00% |
Series G Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate | 6.00% |  |  | 6.00% | 6.00% | 6.00% | 6.00%
Series H Preferred Stock [Member] |  |  |  |  |  |  |
Preferred stock, dividend rate | 3.50% |  |  |  | 3.50% |  | 3.50%

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