Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 594,372	$ 564,459
Interest-bearing bank deposits	2,287,438	323,332
Federal funds sold	711	728
Securities available for sale, at fair value (amortized cost of $6,238,835 and $6,310,214)	5,565,620	5,556,041
Securities held to maturity (fair value of $2,623,760 and $2,615,398 )	2,825,064	2,852,495
Loans held for sale (includes $14,923 and $10,843 measured at fair value)	23,436	26,385
Loans	23,404,523	23,114,046
Less: allowance for loan losses	(309,385)	(307,789)
Loans, net	23,095,138	22,806,257
Property and equipment, net of accumulated depreciation of $304,305 and $303,451	324,107	328,605
Right of use assets, net of accumulated amortization of $46,939 and $44,901	101,449	96,884
Prepaid expenses	54,540	44,632
Other real estate and foreclosed assets, net	1,976	2,017
Accrued interest receivable	141,704	131,849
Goodwill	855,453	855,453
Other intangible assets, net	53,080	56,193
Life insurance contracts	736,979	729,774
Funded pension assets, net	218,389	216,818
Deferred tax asset, net	187,975	211,418
Other assets	479,652	380,485
Total assets	37,547,083	35,183,825
Deposits
Noninterest-bearing	12,860,027	13,645,113
Interest-bearing	16,753,043	15,425,236
Total deposits	29,613,070	29,070,349
Short-term borrowings	3,519,497	1,871,271
Long-term debt	242,115	242,077
Accrued interest payable	21,823	9,935
Lease liabilities	120,871	116,422
Other liabilities	498,475	531,143
Total liabilities	34,015,851	31,841,197
Stockholders' equity:
Common stock	309,513	309,513
Capital surplus	1,720,623	1,716,884
Retained earnings	2,188,561	2,088,413
Accumulated other comprehensive loss, net	(687,465)	(772,182)
Total stockholders' equity	3,531,232	3,342,628
Total liabilities and stockholders' equity	$ 37,547,083	$ 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	86,066,000	85,941,000