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Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Treasury Stock, Common
--- | --- | --- | --- | --- | --- | --- | ---
Total shareholders’ equity at beginning of period at Dec. 31, 2021 | $ 4,439,555 | $ 145,452 | $ 642 | $ 1,009,921 | $ 2,956,966 | $ 347,318 | $ (20,744)
Net income | 218,216 |  |  |  | 218,216 |  |
Other comprehensive income (loss) | (1,221,524) |  |  |  |  | (1,221,524) |
Stock option exercises/stock unit conversions (13,626 shares QTD and 64,013 shares YTD in 2023 and 28,832 shares QTD and 144,262 shares YTD in 2022) | 6,490 |  |  |  | (4,777) |  | 11,267
Stock compensation expense recognized in earnings | 5,530 |  |  | 5,530 |  |  |
Purchase of treasury stock (289,149 shares QTD and 298,332 shares YTD in 2023 and 7,459 shares YTD in 2022) | (996) |  |  |  |  |  | (996)
Cash dividends – preferred stock (approximately $11.13 per share which is equivalent to approximately $0.28 per depository share QTD in 2023 and 2022, respectively and approximately $22.25 per share which is equivalent to approximately $0.56 per depository share YTD in 2023 and 2022, respectively ) | (3,338) |  |  |  | (3,338) |  |
Cash dividends – common stock ($0.87 per share QTD and $1.74 per share YTD in 2023 and $0.75 per share QTD and $1.50 per share YTD in 2022) | (96,958) |  |  |  | (96,958) |  |
Total shareholders’ equity at end of period at Jun. 30, 2022 | 3,346,975 | 145,452 | 642 | 1,015,451 | 3,070,109 | (874,206) | (10,473)
Total shareholders’ equity at beginning of period at Mar. 31, 2022 | 3,776,292 | 145,452 | 642 | 1,012,033 | 3,002,642 | (371,790) | (12,687)
Net income | 119,114 |  |  |  | 119,114 |  |
Other comprehensive income (loss) | (502,416) |  |  |  |  | (502,416) |
Stock option exercises/stock unit conversions (13,626 shares QTD and 64,013 shares YTD in 2023 and 28,832 shares QTD and 144,262 shares YTD in 2022) | 751 |  |  |  | (1,463) |  | 2,214
Stock compensation expense recognized in earnings | 3,418 |  |  | 3,418 |  |  |
Cash dividends – preferred stock (approximately $11.13 per share which is equivalent to approximately $0.28 per depository share QTD in 2023 and 2022, respectively and approximately $22.25 per share which is equivalent to approximately $0.56 per depository share YTD in 2023 and 2022, respectively ) | (1,669) |  |  |  | (1,669) |  |
Cash dividends – common stock ($0.87 per share QTD and $1.74 per share YTD in 2023 and $0.75 per share QTD and $1.50 per share YTD in 2022) | (48,515) |  |  |  | (48,515) |  |
Total shareholders’ equity at end of period at Jun. 30, 2022 | 3,346,975 | 145,452 | 642 | 1,015,451 | 3,070,109 | (874,206) | (10,473)
Total shareholders’ equity at beginning of period at Dec. 31, 2022 | 3,137,228 | 145,452 | 643 | 1,029,756 | 3,309,671 | (1,348,294) | 0
Net income | 339,771 |  |  |  | 339,771 |  |
Other comprehensive income (loss) | 43,267 |  |  |  |  | 43,267 |
Stock option exercises/stock unit conversions (13,626 shares QTD and 64,013 shares YTD in 2023 and 28,832 shares QTD and 144,262 shares YTD in 2022) | 2,446 |  | 1 | 1,463 | (519) |  | 1,501
Stock compensation expense recognized in earnings | 9,535 |  |  | 9,535 |  |  |
Purchase of treasury stock (289,149 shares QTD and 298,332 shares YTD in 2023 and 7,459 shares YTD in 2022) | (29,124) |  |  |  |  |  | (29,124)
Cash dividends – preferred stock (approximately $11.13 per share which is equivalent to approximately $0.28 per depository share QTD in 2023 and 2022, respectively and approximately $22.25 per share which is equivalent to approximately $0.56 per depository share YTD in 2023 and 2022, respectively ) | (3,338) |  |  |  | (3,338) |  |
Cash dividends – common stock ($0.87 per share QTD and $1.74 per share YTD in 2023 and $0.75 per share QTD and $1.50 per share YTD in 2022) | (113,043) |  |  |  | (113,043) |  |
Total shareholders’ equity at end of period at Jun. 30, 2023 | 3,386,742 | 145,452 | 644 | 1,040,754 | 3,532,542 | (1,305,027) | (27,623)
Total shareholders’ equity at beginning of period at Mar. 31, 2023 | 3,467,801 | 145,452 | 644 | 1,035,961 | 3,428,991 | (1,142,138) | (1,109)
Net income | 162,118 |  |  |  | 162,118 |  |
Other comprehensive income (loss) | (162,889) |  |  |  |  | (162,889) |
Stock option exercises/stock unit conversions (13,626 shares QTD and 64,013 shares YTD in 2023 and 28,832 shares QTD and 144,262 shares YTD in 2022) | 946 |  |  |  | (491) |  | 1,437
Stock compensation expense recognized in earnings | 4,793 |  |  | 4,793 |  |  |
Purchase of treasury stock (289,149 shares QTD and 298,332 shares YTD in 2023 and 7,459 shares YTD in 2022) | (27,951) |  |  |  |  |  | (27,951)
Cash dividends – preferred stock (approximately $11.13 per share which is equivalent to approximately $0.28 per depository share QTD in 2023 and 2022, respectively and approximately $22.25 per share which is equivalent to approximately $0.56 per depository share YTD in 2023 and 2022, respectively ) | (1,669) |  |  |  | (1,669) |  |
Cash dividends – common stock ($0.87 per share QTD and $1.74 per share YTD in 2023 and $0.75 per share QTD and $1.50 per share YTD in 2022) | (56,407) |  |  |  | (56,407) |  |
Total shareholders’ equity at end of period at Jun. 30, 2023 | $ 3,386,742 | $ 145,452 | $ 644 | $ 1,040,754 | $ 3,532,542 | $ (1,305,027) | $ (27,623)

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