Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 703,421	$ 401,201
Interest-bearing bank deposits	3,132,551	3,830,177
Federal funds sold	459	458
Securities available for sale, at fair value (amortized cost of $6,380,002 and $6,984,530)	5,993,007	6,986,698
Securities held to maturity (fair value of $2,429,049 and $1,631,482)	2,488,088	1,565,751
Loans held for sale (includes $25,046 and $41,022 measured at fair value)	59,877	93,069
Loans	21,323,341	21,134,282
Less: allowance for loan losses	(317,843)	(342,065)
Loans, net	21,005,498	20,792,217
Property and equipment, net of accumulated depreciation of $286,052 and $280,065	353,441	350,309
Right of use assets, net of accumulated amortization of $37,511 and $34,425	100,889	102,239
Prepaid expenses	43,572	38,793
Other real estate and foreclosed assets, net	6,345	7,533
Accrued interest receivable	98,873	96,938
Goodwill	855,453	855,453
Other intangible assets, net	66,479	70,226
Life insurance contracts	726,308	664,535
Funded pension assets, net	233,195	227,870
Other assets	390,229	447,738
Deferred tax asset, net	59,606
Total assets	36,317,291	36,531,205
Deposits
Noninterest-bearing	14,976,670	14,392,808
Interest-bearing	15,523,039	16,073,089
Total deposits	30,499,709	30,465,897
Short-term borrowings	1,620,302	1,665,061
Long-term debt	240,454	244,220
Accrued interest payable	2,999	3,103
Lease liabilities	120,788	122,079
Deferred tax liability, net		19,434
Other liabilities	382,088	341,059
Total liabilities	32,866,340	32,860,853
Stockholders' equity:
Common stock	309,513	309,513
Capital surplus	1,742,021	1,755,701
Retained earnings	1,758,693	1,659,073
Accumulated other comprehensive loss, net	(359,276)	(53,935)
Total stockholders' equity	3,450,951	3,670,352
Total liabilities and stockholders' equity	$ 36,317,291	$ 36,531,205
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	86,460,000	86,749,000