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Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 680,627 $ 240,528
Accumulated Amortization and Impairment (198,341) (119,681)
Net Carrying Amount 482,286 120,847
Core deposit    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 586,735 189,636
Accumulated Amortization and Impairment (166,160) (95,950)
Net Carrying Amount 420,575 93,686
Customer trust relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 93,892 50,892
Accumulated Amortization and Impairment (32,181) (23,731)
Net Carrying Amount $ 61,711 $ 27,161