Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 561,202	$ 564,459
Interest-bearing bank deposits	626,646	323,332
Federal funds sold	436	728
Securities available for sale, at fair value (amortized cost of $5,496,718 and $6,310,214)	4,915,195	5,556,041
Securities held to maturity (fair value of $2,485,918 and $2,615,398)	2,684,779	2,852,495
Loans held for sale (includes $13,269 and $10,853 measured at fair value)	26,124	26,385
Loans	23,921,917	23,114,046
Less: allowance for loan losses	(307,907)	(307,789)
Loans, net	23,614,010	22,806,257
Property and equipment, net of accumulated depreciation of $318,746 and $303,451	301,639	328,605
Right of use assets, net of accumulated amortization of $55,815 and $44,901	105,799	96,884
Prepaid expense	45,234	44,632
Other real estate and foreclosed assets, net	3,628	2,017
Accrued interest receivable	157,179	131,849
Goodwill	855,453	855,453
Other intangible assets, net	44,637	56,193
Life insurance contracts	749,495	729,774
Funded pension assets, net	216,849	216,818
Deferred tax asset, net	153,384	211,418
Other assets	516,884	380,485
Total assets	35,578,573	35,183,825
Deposits:
Noninterest-bearing	11,030,515	13,645,113
Interest-bearing	18,659,544	15,425,236
Total deposits	29,690,059	29,070,349
Short-term borrowings	1,154,829	1,871,271
Long-term debt	236,317	242,077
Accrued interest payable	45,000	9,935
Lease liabilities	125,618	116,422
Other liabilities	523,089	531,143
Total liabilities	31,774,912	31,841,197
Stockholders' equity:
Common stock	309,513	309,513
Capital surplus	1,739,671	1,716,884
Retained earnings	2,375,604	2,088,413
Accumulated other comprehensive loss, net	(621,127)	(772,182)
Total stockholders' equity	3,803,661	3,342,628
Total liabilities and stockholders' equity	$ 35,578,573	$ 35,183,825
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	86,345,000	85,941,000