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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, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Amortization of unrealized gains and losses |  | $ 2,008 | $ 1,396 | $ 5,989 | $ 2,949
Tax benefit (expense) |  | (3,120) | (3,875) | (12,231) | (10,318)
Realized net gain (loss) on sale of securities |  | 11 | (99) | (5,590) | (3,819)
Total reclassifications for the period, net of tax |  | 3,336 | (116) | 4,285 | (5,952)
Unrealized gains (losses) |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income |  | (1,997) | (1,495) | (11,579) | (6,768)
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 |  | 6,408 | 1,572 | 17,570 | (94)
Net actuarial loss |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income | [1] | (189) | (224) | (567) | (671)
Amortization of pension plan |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassified from accumulated other comprehensive income |  | (189) | (224) | (567) | (671)
Tax benefit |  | 40 | 47 | 119 | 140
Total reclassifications for the period, net of tax |  | (149) | (177) | (448) | (531)
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] | (2,008) | (1,396) | (5,989) | (2,949)
Tax benefit (expense) |  | 422 | 293 | 1,258 | 619
Net of tax |  | (1,586) | (1,103) | (4,731) | (2,330)
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) |  | (2) | 21 | 1,174 | 802
Net of tax |  | 9 | (78) | (4,416) | (3,017)
Realized net gain (loss) on sale of securities | [3] | 11 | (99) | (5,590) | (3,819)
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) |  | (1,346) | (330) | (3,690) | 20
Net of tax |  | 5,062 | 1,242 | 13,880 | (74)
Realized net (loss) gain on interest rate swap derivatives | [4] | $ 6,408 | $ 1,572 | $ 17,570 | $ (94)
[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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