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Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Amortization of unrealized gains and losses |  | $ 2,119 | $ 2,008 | $ 6,210 | $ 5,989
Tax benefit (expense) |  | (4,390) | (3,120) | (14,224) | (12,231)
Realized net gain (loss) on sale of securities |  | (1,929) | 11 | (2,510) | (5,590)
Total reclassifications for the period, net of tax |  | 1,172 | 3,336 | 7,047 | 4,285
Unrealized gains (losses) |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income |  | (4,048) | (1,997) | (8,720) | (11,579)
Realized net gain (loss) on interest rate swap derivatives |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income |  | 5,688 | 6,408 | 18,112 | 17,570
Net actuarial loss |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income | [1] | (156) | (189) | (471) | (567)
Amortization of pension plan |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income |  | (156) | (189) | (471) | (567)
Tax benefit |  | 33 | 40 | 99 | 119
Total reclassifications for the period, net of tax |  | (123) | (149) | (372) | (448)
Unrealized gains and losses on securities transferred | Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Amortization of unrealized gains and losses | [2] | (2,119) | (2,008) | (6,210) | (5,989)
Tax benefit (expense) |  | 445 | 422 | 1,304 | 1,258
Net of tax |  | (1,674) | (1,586) | (4,906) | (4,731)
Unrealized gains and losses on available for sale securities | Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Tax benefit (expense) |  | 405 | (2) | 527 | 1,174
Net of tax |  | (1,524) | 9 | (1,983) | (4,416)
Realized net gain (loss) on sale of securities | [3] | (1,929) | 11 | (2,510) | (5,590)
Interest rate swap derivatives | Reclassification out of accumulated other comprehensive income | Realized net gain (loss) on interest rate swap derivatives |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Tax benefit (expense) |  | (1,195) | (1,346) | (3,804) | (3,690)
Net of tax |  | 4,493 | 5,062 | 14,308 | 13,880
Realized net (loss) gain on interest rate swap derivatives | [4] | $ 5,688 | $ 6,408 | $ 18,112 | $ 17,570
[1] | These AOCI components are included in the computation of net periodic pension cost (income) presented in “Note 8 – Employee Benefit Plans.”
[2] | Included in interest income on the consolidated statements of income.
[3] | Listed as net gain (loss) on sale of securities AFS on the consolidated statements of income.
[4] | Included in interest expense for FHLB borrowings, other borrowings and deposits on the consolidated statements of income.

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