Derivative Financial Instruments (Derivatives not Designated as Hedging Instruments, Effect in Statements of Income) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Noninterest Income	$ 598	$ 89
Interest rate contracts with customers [Member] | Loan Related Derivative Income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Noninterest Income	(19,009)	11,132
Mirror interest rate contracts with counterparties [Member] | Loan Related Derivative Income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Noninterest Income	19,310	(11,171)
Risk participation agreements [Member] | Loan Related Derivative Income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Noninterest Income	(17)	(11)
Interest rate lock commitments [Member] | Mortgage banking revenues
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Noninterest Income	248	263
Forward sale commitments [Member] | Mortgage banking revenues
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Noninterest Income	$ 66	$ (124)