Derivative Financial Instruments - Free-Standing (Details) - Derivatives Not Designated as Hedging Instruments - Interest rate swaps - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Derivative financial instruments
Notional Amount	$ 2,708,933		$ 2,753,801
Positive fair value, derivative asset	2,740		1,204
Negative fair value, derivative liability	4,645		$ 521
Net interest expense	$ 0	$ 0
Minimum
Derivative financial instruments
Derivative, Floating rate	1.89%		5.84%
Fixed interest rate (as a percent)	2.39%		2.39%
Maximum
Derivative financial instruments
Derivative, Floating rate	8.33%		8.34%
Fixed interest rate (as a percent)	5.98%		5.98%
Customer swap program
Derivative financial instruments
Notional Amount	$ 2,700,000		$ 2,800,000
Positive fair value, derivative asset	2,700		1,200
Negative fair value, derivative liability	4,600		$ 500
Upfront fees on the dealer swap	$ 0	$ 100