Derivative Instruments and Hedging Activities (Details) - Derivatives Not Designated as Hedging Instruments [Member] $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025 USD ($) Agreement	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Agreement	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) Agreement
Derivative Asset [Abstract]
Derivatives, fair value		$ 70,393		$ 70,393		$ 104,439
Netting adjustments, fair value	[1]	16,136		16,136		23,592
Net derivatives in the balance sheet, fair value		54,257		54,257		80,847
Derivatives not offset on the balance sheet, fair value		6,556		6,556		1,792
Cash collateral, fair value	[2]	0		0		0
Net derivative amounts, fair value		47,701		47,701		79,055
Derivative Liability [Abstract]
Derivatives, fair value		70,245		70,245		104,373
Netting adjustments, fair value	[1]	0		0		(26)
Net derivatives in the balance sheet, fair value		70,245		70,245		104,399
Derivatives not offset on the balance sheet, fair value		6,556		6,556		1,792
Cash collateral, fair value	[2]	0		0		0
Net derivative amounts, fair value		63,689		63,689		$ 102,607
Other Income [Member]
Gain or loss recognized in income on derivatives not designating as a hedging relationship [Abstract]
Increase in other income		$ 161	$ 65	$ 178	$ 151
Interest Rate Swaps [Member]
Interest rate derivatives [Abstract]
Number of risk participation agreements held | Agreement		22		22		20
Interest Rate Swaps [Member] | Other Assets [Member]
Derivative Asset [Abstract]
Derivatives, notional amount		$ 1,333,167		$ 1,333,167		$ 1,374,800
Derivatives, fair value		70,322		70,322		104,377
Interest Rate Swaps [Member] | Other Liabilities [Member]
Derivative Liability [Abstract]
Derivatives, notional amount		1,333,167		1,333,167		1,374,800
Derivatives, fair value		70,220		70,220		104,371
Risk Participation Agreements [Member] | Other Assets [Member]
Derivative Asset [Abstract]
Derivatives, notional amount		97,796		97,796		90,725
Derivatives, fair value		71		71		62
Risk Participation Agreements [Member] | Other Liabilities [Member]
Derivative Liability [Abstract]
Derivatives, notional amount		16,391		16,391		18,811
Derivatives, fair value		$ 25		$ 25		$ 2

[1] Netting adjustments represent the amounts recorded to convert derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance on the settle to market rules for cleared derivatives. The CME legally characterizes the variation margin posted between counterparties as settlements of the outstanding derivative contracts instead of cash collateral.

[2] Cash collateral represents the amount that cannot be used to offset our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The other collateral consists of securities and is exchanged under bilateral collateral and master netting agreements that allow us to offset the net derivative position with the related collateral. The application of the other collateral cannot reduce the net derivative position below zero. Therefore, excess other collateral, if any, is not reflected above.