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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Comprehensive Income [Abstract]      
Net income $ 291,160 $ 115,525 $ 128,398
Unrealized gains and losses on available for sale debt securities:      
Net gains (losses) arising during the period 67,446 7,841 32,125
Reclassification adjustment for gains and losses included in net income (63) 2,087 0
Total 67,383 9,928 32,125
Unrealized gains and losses on derivatives designated as cash flow hedges:      
Net gains (losses) arising during the period 120 3,179 2,388
Reclassification adjustment for gains and losses included in net income (5,038) (9,557) (12,948)
Total (4,918) (6,378) (10,560)
Amortization related to post-retirement obligations (3,293) 2,210 2,365
Total other comprehensive income, net of tax 59,172 5,760 23,930
Total comprehensive income $ 350,332 $ 121,285 $ 152,328