Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2025

Stockholders' Equity Note [Abstract]

Components of Accumulated Other Comprehensive Income (Loss)

A rollforward of the components of Accumulated Other Comprehensive Income (Loss) is presented in the table that follows:

($ in thousands)	Available for Sale Securities			HTM Securities Transferred from AFS			Employee Benefit Plans			Cash Flow Hedges			Equity Method Investment			Total
Balance, December 31, 2024	$	(473,679	)	$	(8,071	)	$	(77,235	)	$	(47,136	)	$	29		$	(606,092	)
Net change in unrealized gain (loss)		146,860			—			—			11,096			(173	)		157,783
Reclassification of net loss realized and included in earnings		—			—			1,888			17,195			—			19,083
Amortization of unrealized net loss on securities transferred to HTM		—			792			—			—			—			792
Income tax expense		(34,140	)		(196	)		(594	)		(6,463	)		—			(41,393	)
Balance, June 30, 2025	$	(360,959	)	$	(7,475	)	$	(75,941	)	$	(25,308	)	$	(144	)	$	(469,827	)
Balance, December 31, 2023	$	(450,748	)	$	(9,385	)	$	(103,061	)	$	(58,306	)	$	373		$	(621,127	)
Net change in unrealized gain (loss)		(59,111	)		—			—			(38,696	)		(344	)		(98,151	)
Reclassification of net loss realized and included in earnings		—			—			2,254			25,471			—			27,725
Valuation adjustments to employee benefit plans		—			—			22,014			—			—			22,014
Amortization of unrealized net loss on securities transferred to HTM		—			818			—			—			—			818
Income tax (expense) benefit		13,450			(184	)		(5,453	)		2,972			—			10,785
Balance, June 30, 2024	$	(496,409	)	$	(8,751	)	$	(84,246	)	$	(68,559	)	$	29		$	(657,936	)

Line Items in Consolidated Income Statements Affected by Amounts Reclassified from Accumulated Other Comprehensive Income

The following table shows the line items in the consolidated statements of income affected by amounts reclassified from AOCI.

	Six Months Ended
Amount reclassified from AOCI (a)	June 30,						Affected line item on
($ in thousands)	2025			2024			the statement of income
Amortization of unrealized net loss on securities transferred to HTM	$	(792	)	$	(818	)	Interest income
Tax effect		196			184		Income taxes
Net of tax		(596	)		(634	)	Net income
Amortization of defined benefit pension and post-retirement items		(1,888	)		(2,254	)	Other noninterest expense (b)
Tax effect		594			506		Income taxes
Net of tax		(1,294	)		(1,748	)	Net income
Reclassification of unrealized loss on cash flow hedges		(14,159	)		(25,281	)	Interest income
Tax effect		3,235			5,681		Income taxes
Net of tax		(10,924	)		(19,600	)	Net income
Amortization of loss on terminated cash flow hedges		(3,036	)		(190	)	Interest income
Tax effect		694			43		Income taxes
Net of tax		(2,342	)		(147	)	Net income
Total reclassifications, net of tax	$	(15,156	)	$	(22,129	)	Net income

(a)Amounts in parentheses indicate reduction in net income.

(b)These AOCI components are included in the computation of net periodic pension and post-retirement cost that is reported with other noninterest
expense (see Note 13 – Retirement Plans for additional details).