Derivative Financial Instruments - Derivative Financial Instruments, their Fair Values, and Balance Sheet Location (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 74,414	$ 95,069
Liability Derivatives	115,092	143,857
Interest Rate Swap Agreements
Derivatives Fair Value [Line Items]
Asset Derivatives	74,235	94,921
Liability Derivatives	115,066	143,752
Interest Rate Swap Agreements | Derivatives designated as hedging instruments
Derivatives Fair Value [Line Items]
Asset Derivatives	(40,679)	(48,672)
Liability Derivatives	0	0
Interest Rate Swap Agreements | Derivatives not designated as hedging instruments
Derivatives Fair Value [Line Items]
Asset Derivatives	114,914	143,593
Liability Derivatives	115,066	143,752
Interest Rate Lock Commitments | Derivatives not designated as hedging instruments
Derivatives Fair Value [Line Items]
Asset Derivatives	158	148
Liability Derivatives	6	0
Forward Commitments | Derivatives not designated as hedging instruments
Derivatives Fair Value [Line Items]
Asset Derivatives	21	0
Liability Derivatives	18	105
Foreign Exchange Contracts | Derivatives not designated as hedging instruments
Derivatives Fair Value [Line Items]
Asset Derivatives	0	0
Liability Derivatives	$ 2	$ 0