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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components Of Accumulated Other Comprehensive Income (Loss) |
| Unrealized Gains (Losses) on Securities (1) |  | Pension Loss | Unrealized Gains on Cash Flow Hedge Derivatives (2) | Total Accumulated Other Comprehensive Income (Loss)
(In thousands) | OTTI |  | Other |
Balance January 1, 2020 | $ | 3,264 |  |  | $ | 98,809 |  |  | $ | (21,940) |  | $ | 30,311 |  |  | $ | 110,444 |
Adoption of ASU 2016-13 | (3,264) |  |  | 3,264 |  |  | — |  | — |  |  | — |
Balance January 1, 2020, adjusted | $ | — |  |  | $ | 102,073 |  |  | $ | (21,940) |  | $ | 30,311 |  |  | $ | 110,444 |
Other comprehensive income (loss) before reclassifications | — |  |  | 236,733 |  |  | (6,104) |  | 93,497 |  |  | 324,126 |
Amounts reclassified from accumulated other comprehensive income | — |  |  | (21,096) |  |  | 1,867 |  | (10,319) |  |  | (29,548) |
Current period other comprehensive income (loss), before tax | — |  |  | 215,637 |  |  | (4,237) |  | 83,178 |  |  | 294,578 |
Income tax (expense) benefit | — |  |  | (53,909) |  |  | 1,059 |  | (20,795) |  |  | (73,645) |
Current period other comprehensive income (loss), net of tax | — |  |  | 161,728 |  |  | (3,178) |  | 62,383 |  |  | 220,933 |
Balance December 31, 2020 | $ | — |  |  | $ | 263,801 |  |  | $ | (25,118) |  | $ | 92,694 |  |  | $ | 331,377 |
Balance January 1, 2019 | $ | 3,861 |  |  | $ | (52,278) |  |  | $ | (23,107) |  | $ | 6,855 |  |  | $ | (64,669) |
Other comprehensive income (loss) before reclassifications | (975) |  |  | 201,280 |  |  | (461) |  | 27,481 |  |  | 227,325 |
Amounts reclassified from accumulated other comprehensive income | 133 |  |  | 215 |  |  | 2,017 |  | 3,793 |  |  | 6,158 |
Current period other comprehensive income (loss), before tax | (842) |  |  | 201,495 |  |  | 1,556 |  | 31,274 |  |  | 233,483 |
Income tax (expense) benefit | 210 |  |  | (50,373) |  |  | (389) |  | (7,818) |  |  | (58,370) |
Current period other comprehensive income (loss), net of tax | (632) |  |  | 151,122 |  |  | 1,167 |  | 23,456 |  |  | 175,113 |
Transfer of unrealized gain on securities for which impairment was not previously recognized | 35 |  |  | (35) |  |  | — |  | — |  |  | — |
Balance December 31, 2019 | $ | 3,264 |  |  | $ | 98,809 |  |  | $ | (21,940) |  | $ | 30,311 |  |  | $ | 110,444 |
(1) The pre-tax amounts reclassified from accumulated other comprehensive income to current earnings are included in "investment securities gains (losses), net" in the consolidated statements of income. (2) The pre-tax amounts reclassified from accumulated other comprehensive income to current earnings are included in "interest and fees on loans" in the consolidated statements of income.

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