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Income Taxes (Components Of The Net Deferred Tax (Liabilities) Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deferred Tax Assets, Gross [Abstract]    
Net unrealized losses on investment securities $ 317,213 $ 303,465
Acquired loans 116,099 146,315
Allowance for credit losses 111,357 115,777
Accrued severance and deferred compensation 36,243 39,904
Other 79,947 88,137
Total gross deferred tax assets 660,859 693,598
Deferred Tax Liabilities, Gross [Abstract]    
Other intangible assets 125,297 155,642
Direct financing leases 36,416 42,825
Deferred loan fees and costs 33,630 34,402
Operating lease right-of-use asset 28,922 30,117
Residential mortgage servicing rights 28,736 31,259
Premises and equipment 19,153 20,579
Other 29,280 31,571
Total gross deferred tax liabilities 301,434 346,395
Net deferred tax asset $ 359,425 $ 347,203