Goodwill and Other Intangible Assets (Carrying Value of Intangible Assets Subject to Amortization) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Purchase Value	$ 285,807	$ 285,807
Accumulated Amortization	250,583	241,170
Carrying Value	35,224	44,637
Core Deposit Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Purchase Value	235,845	235,845
Accumulated Amortization	217,260	209,658
Carrying Value	18,585	26,187
Credit Card and Trust Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Purchase Value	49,962	49,962
Accumulated Amortization	33,323	31,512
Carrying Value	$ 16,639	$ 18,450