Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
ASSETS
Cash and due from banks	$ 510,347	$ 574,910
Interest-bearing bank deposits	841,067	939,306
Federal funds sold	391	409
Securities available for sale, at fair value (amortized cost of $5,845,045 and $5,774,133)	5,334,528	5,161,491
Securities held to maturity (fair value of $2,194,627 and $2,233,526)	2,360,441	2,435,663
Loans held for sale (includes $25,935 and $18,929 measured at fair value)	26,596	21,525
Loans	23,098,146	23,299,447
Less: allowance for loan losses	(318,119)	(318,882)
Loans, net	22,780,027	22,980,565
Property and equipment, net of accumulated depreciation of $352,609 and $345,962	275,865	279,767
Right of use assets, net of accumulated amortization of $70,411 and $67,063	95,621	98,822
Prepaid expenses	51,068	45,763
Other real estate and foreclosed assets, net	26,690	27,797
Accrued interest receivable	140,526	143,237
Goodwill	855,453	855,453
Other intangible assets, net	33,110	35,224
Life insurance contracts	776,937	774,542
Funded pension assets, net	263,533	260,003
Deferred tax asset, net	104,991	146,567
Other assets	273,489	300,741
Total assets	34,750,680	35,081,785
Deposits
Noninterest-bearing	10,614,874	10,597,461
Interest-bearing	18,579,859	18,895,390
Total deposits	29,194,733	29,492,851
Short-term borrowings	542,780	639,015
Long-term debt	210,582	210,544
Accrued interest payable	18,024	20,148
Lease liabilities	114,282	117,817
Other liabilities	391,607	473,774
Total liabilities	30,472,008	30,954,149
Stockholders' equity:
Common stock	309,513	309,513
Capital surplus	1,699,474	1,719,609
Retained earnings	2,784,657	2,704,606
Accumulated other comprehensive loss, net	(514,972)	(606,092)
Total stockholders' equity	4,278,672	4,127,636
Total liabilities and stockholders' equity	$ 34,750,680	$ 35,081,785
Preferred shares authorized (par value of $20.00 per share)	50,000,000	50,000,000
Common shares authorized (par value of $3.33 per share)	350,000,000	350,000,000
Common shares issued	92,947,000	92,947,000
Common shares outstanding	86,033,000	86,124,000