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Consolidation Statements of Comprehensive Income - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Net income | $ 365,238 | $ 224,886 | $ 403,837
Unrealized holding gains (losses) arising during year | 84,407 | (527,805) | (119,598)
Unrealized gains (losses) on securities with credit loss recognized in earnings | 47,585 | (148,495) | (7,159)
Amounts reclassified into net income: Held-to-maturity securities | 0 | 3 | (9)
Amounts reclassified into net income: Net realized (gains) losses on disposals and losses on intent-to-sell available-for-sale securities | 16,162 | 47,438 | (3,022)
Amounts reclassified into net income: Credit loss (benefit) expense | (10,189) | 30,944 | 5,418
Total unrealized gains (losses) on investment securities | 137,965 | (597,915) | (124,370)
Net actuarial gain (loss) | (15,315) | (16,543) | 17,093
Amount reclassified into net income: Net actuarial (gain) loss, Net | 2,391 | 1,317 | 2,190
Total defined benefit pension and post-retirement plans | (12,924) | (15,226) | 19,283
Other comprehensive income (loss) | 125,041 | (613,141) | (105,087)
Comprehensive income (loss) | $ 490,279 | $ (388,255) | $ 298,750

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