Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 501,594	$ 526,306
Interest-bearing bank deposits	2,203,328	1,333,352
Federal funds sold	457	434
Securities available for sale, at fair value (amortized cost of $7,190,161 and $5,766,234)	7,300,421	5,999,327
Securities held to maturity (fair value of $1,420,107 and $1,467,581)	1,332,712	1,357,170
Loans held for sale	90,002	136,063
Loans	21,148,530	21,789,931
Less: allowance for loan losses	(399,668)	(450,177)
Loans, net	20,748,862	21,339,754
Property and equipment, net of accumulated depreciation of $266,239 and $271,801	353,358	380,516
Right of use assets, net of accumulated amortization of $28,589 and $23,330	101,547	110,691
Prepaid expenses	44,139	41,443
Other real estate and foreclosed assets, net	10,201	11,648
Accrued interest receivable	100,865	104,268
Goodwill	855,453	855,453
Other intangible assets, net	78,228	86,892
Life insurance contracts	660,087	615,780
Funded pension assets, net	214,763	171,175
Other assets	502,692	568,330
Total assets	35,098,709	33,638,602
Deposits
Noninterest-bearing	13,406,385	12,199,750
Interest-bearing	15,866,722	15,498,127
Total deposits	29,273,107	27,697,877
Short-term borrowings	1,516,508	1,667,513
Long-term debt	248,052	378,322
Accrued interest payable	3,301	4,315
Lease liabilities	122,936	130,627
Deferred tax liability, net	44,393	49,406
Other liabilities	327,511	271,517
Total liabilities	31,535,808	30,199,577
Stockholders' equity:
Common stock	309,513	309,513
Capital surplus	1,770,973	1,757,937
Retained earnings	1,439,553	1,291,506
Accumulated other comprehensive income, net	42,862	80,069
Total stockholders' equity	3,562,901	3,439,025
Total liabilities and stockholders' equity	$ 35,098,709	$ 33,638,602
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	86,847,000	86,728,000