v3.26.1
Other Comprehensive (Loss) Income - Schedule of Accumulated Other Comprehensive (Loss) Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance $ 4,340,553 $ 3,611,967
Other comprehensive (loss) income before reclassifications (20,912) (26,378)
Less: Amounts reclassified from accumulated other comprehensive (loss) income (427) (286,928)
Net current-period other comprehensive loss (20,485) 260,550
Ending balance 4,285,980 3,582,934
Total    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (227,363) (584,329)
Net current-period other comprehensive loss (20,485) 260,550
Ending balance (247,848) (323,779)
Unrealized Losses on Available for Sale Securities    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (259,361) (583,875)
Other comprehensive (loss) income before reclassifications (17,870) (31,009)
Less: Amounts reclassified from accumulated other comprehensive (loss) income 0 (282,327)
Net current-period other comprehensive loss (17,870) 251,318
Ending balance (277,231) (332,557)
Unrealized Gains and (Losses) on Cash Flow Hedges    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance (2,990) (26,470)
Other comprehensive (loss) income before reclassifications (3,042) 4,631
Less: Amounts reclassified from accumulated other comprehensive (loss) income (2,010) (5,736)
Net current-period other comprehensive loss (1,032) 10,367
Ending balance (4,022) (16,103)
Defined Benefit Pension Plans    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning Balance 34,988 26,016
Other comprehensive (loss) income before reclassifications 0 0
Less: Amounts reclassified from accumulated other comprehensive (loss) income 1,583 1,135
Net current-period other comprehensive loss (1,583) (1,135)
Ending balance $ 33,405 $ 24,881