Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 230,965	$ 196,742
Interest-bearing deposits with other banks	861,166	1,468,636
Federal funds sold	795	789
Total cash and cash equivalents	1,092,926	1,666,167
Securities available for sale at estimated fair value (amortized cost-$2,103,362 at June 30, 2018 and $1,900,684 at December 31, 2017)	2,060,927	1,888,756
Securities held to maturity (estimated fair value-$19,708 at June 30, 2018 and $20,018 at December 31, 2017)	20,378	20,428
Equity securities at estimated fair value	9,664	0
Other investment securities	175,334	162,461
Loans held for sale (at fair value-$282,439 at June 30, 2018 and $263,308 at December 31, 2017)	285,194	265,955
Loans	13,529,008	13,027,337
Less: Unearned income	(12,379)	(15,916)
Loans net of unearned income	13,516,629	13,011,421
Less: Allowance for loan losses	(77,135)	(76,627)
Net loans	13,439,494	12,934,794
Bank premises and equipment	100,260	104,894
Goodwill	1,478,014	1,478,380
Accrued interest receivable	57,270	52,815
Other assets	488,142	484,309
TOTAL ASSETS	19,207,603	19,058,959
Deposits:
Noninterest-bearing	4,331,840	4,294,687
Interest-bearing	9,498,926	9,535,904
Total deposits	13,830,766	13,830,591
Borrowings:
Federal funds purchased	14,000	16,235
Securities sold under agreements to repurchase	185,507	311,352
Federal Home Loan Bank borrowings	1,560,365	1,271,531
Other long-term borrowings	234,276	242,446
Reserve for lending-related commitments	927	679
Accrued expenses and other liabilities	139,197	145,595
TOTAL LIABILITIES	15,965,038	15,818,429
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-105,208,914 and 105,069,821 at June 30, 2018 and December 31, 2017, respectively, including 1,005,372 and 29,173 shares in treasury at June 30, 2018 and December 31, 2017, respectively	263,022	262,675
Surplus	2,131,697	2,129,077
Retained earnings	954,953	891,816
Accumulated other comprehensive loss	(70,001)	(42,025)
Treasury stock, at cost	(37,106)	(1,013)
TOTAL SHAREHOLDERS' EQUITY	3,242,565	3,240,530
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 19,207,603	$ 19,058,959