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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2023
Equity [Abstract] |
Schedule of AOCI | The following table summarizes the changes within each classification of AOCI, net of tax:
(dollars in thousands) | Unrealized Gains and Losses on Available- for-Sale Debt Securities |  | Unrealized Gains and Losses on Held-to- Maturity Securities |  | Gains and Losses on Hedges |  | Defined Benefit Pension Plans |  | Total
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | (611,260) |  |  | $ | (106,966) |  |  | $ | 9,872 |  |  | $ | (4) |  |  | $ | (708,358) |
Other comprehensive income (loss) before reclassifications | (90,121) |  |  | — |  |  | 9,840 |  |  | — |  |  | (80,281) |
Amounts reclassified from AOCI to income (1) | (12) |  |  | 3,822 |  |  | (23,808) |  |  | 4 |  |  | (19,994) |
Balance at end of period | $ | (701,393) |  |  | $ | (103,144) |  |  | $ | (4,096) |  |  | $ | — |  |  | $ | (808,633) |
Three Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | (314,364) |  |  | $ | (16,727) |  |  | $ | (7,132) |  |  | $ | 24 |  |  | $ | (338,199) |
Other comprehensive income (loss) before reclassifications | (122,776) |  |  | (108,266) |  |  | (2,578) |  |  | — |  |  | (233,620) |
Amounts reclassified from AOCI to income (1) | 65 |  |  | 2,794 |  |  | (165) |  |  | (8) |  |  | 2,686 |
Balance at end of period | $ | (437,075) |  |  | $ | (122,199) |  |  | $ | (9,875) |  |  | $ | 16 |  |  | $ | (569,133) |
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | (642,346) |  |  | $ | (112,664) |  |  | $ | (31,549) |  |  | $ | 137 |  |  | $ | (786,422) |
Other comprehensive income (loss) before reclassifications | (62,902) |  |  | 1,325 |  |  | 45,825 |  |  | — |  |  | (15,752) |
Amounts reclassified from AOCI to income (1) | 3,855 |  |  | 8,195 |  |  | (18,372) |  |  | (137) |  |  | (6,459) |
Balance at end of period | $ | (701,393) |  |  | $ | (103,144) |  |  | $ | (4,096) |  |  | $ | — |  |  | $ | (808,633) |
Six Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | (2,950) |  |  | $ | — |  |  | $ | 543 |  |  | $ | 32 |  |  | $ | (2,375) |
Other comprehensive income (loss) before reclassifications | (433,929) |  |  | (125,229) |  |  | (9,748) |  |  | — |  |  | (568,906) |
Amounts reclassified from AOCI to income (1) | (196) |  |  | 3,030 |  |  | (670) |  |  | (16) |  |  | 2,148 |
Balance at end of period | $ | (437,075) |  |  | $ | (122,199) |  |  | $ | (9,875) |  |  | $ | 16 |  |  | $ | (569,133) |
(1)See table below for details about reclassifications to income.
Reclassifications out of AOCI | The following table summarizes the amounts reclassified out of each component of AOCI for the three months ended June 30, 2023 and 2022:
| Three Months Ended June 30, |  |
(dollars in thousands) | 2023 |  | 2022 |  |
Details about AOCI Components | Amount Reclassified from AOCI |  | Affected Line Item in the Statement of Income
Unrealized gains and losses on available-for-sale securities | $ | 17 |  |  | $ | (85) |  |  | Debt securities gains (losses), net
| (5) |  |  | 20 |  |  | Income tax (expense) benefit
| $ | 12 |  |  | $ | (65) |  |  | Net income (loss)
Unrealized gains and losses on held-to-maturity securities | $ | (5,122) |  |  | $ | (3,692) |  |  | Interest income (expense)
| 1,300 |  |  | 898 |  |  | Income tax (expense) benefit
| $ | (3,822) |  |  | $ | (2,794) |  |  | Net income (loss)
Gains and losses on hedges Interest rate contracts | $ | 32,112 |  |  | $ | 219 |  |  | Interest income (expense)
| (8,304) |  |  | (54) |  |  | Income tax (expense) benefit
| $ | 23,808 |  |  | $ | 165 |  |  | Net income (loss)
Amortization of defined benefit pension items |  |  |  |  |
Actuarial gains (losses) | $ | (6) |  |  | $ | 10 |  |  | Salaries and employee benefits
| 2 |  |  | (2) |  |  | Income tax (expense) benefit
| $ | (4) |  |  | $ | 8 |  |  | Net income (loss)
Total reclassifications for the period | $ | 19,994 |  |  | $ | (2,686) |  |  | Net income (loss)
The following table summarizes the amounts reclassified out of each component of AOCI for the six months ended June 30, 2023 and 2022:
| Six Months Ended June 30, |  |
(dollars in thousands) | 2023 |  | 2022 |  |
Details about AOCI Components | Amount Reclassified from AOCI |  | Affected Line Item in the Statement of Income
Unrealized gains and losses on available-for-sale securities | $ | (5,199) |  |  | $ | 257 |  |  | Debt securities gains (losses), net
| 1,344 |  |  | (61) |  |  | Income tax (expense) benefit
| $ | (3,855) |  |  | $ | 196 |  |  | Net income (loss)
Unrealized gains and losses on held-to-maturity securities | $ | (10,951) |  |  | $ | (4,002) |  |  | Interest income (expense)
| 2,756 |  |  | 972 |  |  | Income tax (expense) benefit
| $ | (8,195) |  |  | $ | (3,030) |  |  | Net income (loss)
Gains and losses on hedges Interest rate contracts | $ | 24,820 |  |  | $ | 888 |  |  | Interest income (expense)
| (6,448) |  |  | (218) |  |  | Income tax (expense) benefit
| $ | 18,372 |  |  | $ | 670 |  |  | Net income (loss)
Amortization of defined benefit pension items |  |  |  |  |
Actuarial gains (losses) | $ | 182 |  |  | $ | 21 |  |  | Salaries and employee benefits
| (45) |  |  | (5) |  |  | Income tax (expense) benefit
| $ | 137 |  |  | $ | 16 |  |  | Net income (loss)
Total reclassifications for the period | $ | 6,459 |  |  | $ | (2,148) |  |  | Net income (loss)

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