Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 185,238	$ 187,886
Interest-bearing deposits with other banks	651,435	831,707
Federal funds sold	820	803
Total cash and cash equivalents	837,493	1,020,396
Securities available for sale at estimated fair value (amortized cost-$2,426,924 at December 31, 2019 and $2,360,884 at December 31, 2018)	2,437,296	2,337,039
Securities held to maturity (estimated fair value-$1,447 at December 31, 2019 and $18,655 at December 31, 2018)	1,446	19,999
Equity securities at estimated fair value	8,894	9,734
Other investment securities	222,161	176,955
Loans held for sale (at fair value-$384,375 at December 31, 2019 and $247,104 at December 31, 2018)	387,514	249,846
Loans	13,713,548	13,429,532
Less: Unearned income	(1,419)	(7,310)
Loans net of unearned income	13,712,129	13,422,222
Less: Allowance for loan losses	(77,057)	(76,703)
Net loans	13,635,072	13,345,519
Bank premises and equipment	96,644	95,245
Operating lease right of-use asset	57,783	0
Goodwill	1,478,014	1,478,014
Accrued interest receivable	58,085	60,597
Other assets	441,922	457,154
TOTAL ASSETS	19,662,324	19,250,498
Deposits:
Noninterest-bearing	4,621,362	4,416,815
Interest-bearing	9,231,059	9,577,934
Total deposits	13,852,421	13,994,749
Borrowings:
Federal funds purchased	0	23,400
Securities sold under agreements to repurchase	124,654	152,927
Federal Home Loan Bank borrowings	1,851,865	1,439,198
Other long-term borrowings	236,164	234,905
Reserve for lending-related commitments	1,733	1,389
Operating lease liability	61,342	0
Accrued expenses and other liabilities	170,312	152,306
TOTAL LIABILITIES	16,298,491	15,998,874
Shareholders' Equity
Preferred stock, $1.00 par value; Authorized-50,000,000 shares, none issued	0	0
Common stock, $2.50 par value; Authorized-200,000,000 shares; issued-105,494,290 and 105,239,121 at December 31, 2019 and December 31, 2018, respectively, including 3,940,619 and 2,915,633 shares in treasury at December 31, 2019 and December 31, 2018, respectively	263,736	263,098
Surplus	2,140,175	2,134,462
Retained earnings	1,132,579	1,013,037
Accumulated other comprehensive loss	(34,869)	(57,019)
Treasury stock, at cost	(137,788)	(101,954)
TOTAL SHAREHOLDERS' EQUITY	3,363,833	3,251,624
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 19,662,324	$ 19,250,498