Derivative Instruments and Hedging Activities - Schedule of the Carrying Amount and Associated Cumulative Basis Adjustment Related to the Application of Hedge Accounting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Fair Value Hedges | Interest-bearing deposits
Derivative [Line Items]
Hedge Accounting Basis Adjustment	$ (2,469)	$ 20,466	$ (402)	$ 8,296
Fair Value Hedges | Long-term debt
Derivative [Line Items]
Hedge Accounting Basis Adjustment	(914)	$ 20,823	1,004	$ 5,427
Interest Rate Contract | Interest-bearing deposits | Derivatives not designated as hedging instruments
Derivative [Line Items]
Hedge Accounting Basis Adjustment			464		$ 1,267
Interest Rate Contract | Long-term debt | Derivatives not designated as hedging instruments
Derivative [Line Items]
Hedge Accounting Basis Adjustment			8,446		9,638
Interest Rate Contract | Fair Value Hedges | Interest-bearing deposits | Designated as hedging instruments
Derivative [Line Items]
Carrying Amount of Assets/(Liabilities)	(1,622,618)		(1,622,618)		(2,013,504)
Hedge Accounting Basis Adjustment			15,114		(8,711)
Interest Rate Contract | Fair Value Hedges | Long-term debt | Designated as hedging instruments
Derivative [Line Items]
Carrying Amount of Assets/(Liabilities)	$ (749,442)		(749,442)		(546,872)
Hedge Accounting Basis Adjustment			$ 14,366		$ (5,986)