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v3.25.3

Other Comprehensive Income - Changes in the Components of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), pre-tax | $ 17,168 | $ 33,434 | $ 55,366 | $ 33,675
Total other comprehensive income (loss), tax expense (benefit) | 4,297 | 8,412 | 13,928 | 8,513
Other comprehensive income, net of tax | 12,871 | 25,022 | 41,438 | 25,162
Securities available for sale: |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized holding gains (losses) on securities, pre-tax | 15,440 | 31,313 | 51,167 | 25,769
Unrealized holding gains (losses) on securities, tax expense (benefit) | 3,855 | 7,872 | 12,854 | 6,494
Unrealized holding gains (losses) on securities, net of tax | 11,585 | 23,441 | 38,313 | 19,275
Amortization of unrealized holding losses on securities transferred to held to maturity category, pre tax | 3,005 | 3,131 | 8,889 | 9,658
Amortization of unrealized holding losses on securities transferred to the held to maturity category | 768 | 800 | 2,274 | 2,468
Amortization of unrealized holding losses on securities transferred to held to maturity category, net of tax | 2,237 | 2,331 | 6,615 | 7,190
Total other comprehensive income (loss), pre-tax | 18,445 | 34,444 | 60,056 | 35,427
Total other comprehensive income (loss), tax expense (benefit) | 4,623 | 8,672 | 15,128 | 8,962
Other comprehensive income, net of tax | 13,822 | 25,772 | 44,928 | 26,465
Derivative instruments: |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized holding gains (losses) on securities, pre-tax | (1,376) | (1,116) | (4,988) | (2,069)
Unrealized holding gains (losses) on securities, tax expense (benefit) | (350) | (288) | (1,275) | (530)
Unrealized holding gains (losses) on securities, net of tax | (1,026) | (828) | (3,713) | (1,539)
Total other comprehensive income (loss), pre-tax | (1,376) | (1,116) | (4,988) | (2,069)
Total other comprehensive income (loss), tax expense (benefit) | (350) | (288) | (1,275) | (530)
Other comprehensive income, net of tax | (1,026) | (828) | (3,713) | (1,539)
Total defined benefit pension and post-retirement benefit plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Amortization of unrealized holding losses on securities transferred to held to maturity category, pre tax | 99 | 106 | 298 | 317
Amortization of unrealized holding losses on securities transferred to the held to maturity category | 24 | 28 | 75 | 81
Amortization of unrealized holding losses on securities transferred to held to maturity category, net of tax | 75 | 78 | 223 | 236
Total other comprehensive income (loss), pre-tax | 99 | 106 | 298 | 317
Total other comprehensive income (loss), tax expense (benefit) | 24 | 28 | 75 | 81
Other comprehensive income, net of tax | $ 75 | $ 78 | $ 223 | $ 236

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