Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
ASSETS
Cash and due from banks	$ 178,376	$ 184,152	$ 186,381
Interest bearing deposits with other banks	49,680	38,813	86,472
Available-for-sale securities, at fair value	2,421,295	2,531,676	2,103,883
Loans and leases	11,037,808	10,835,512	10,604,547
Less: Unearned income	19,268	23,521	28,569
Allowance for credit losses	121,561	123,736	126,935
Net loans and leases	10,896,979	10,688,255	10,449,043
Loans held for sale, at fair value	184,921	166,927	210,698
Premises and equipment, net	306,863	305,561	305,694
Accrued interest receivable	40,716	42,005	39,645
Goodwill	300,798	300,798	294,901
Other identifiable intangibles	19,854	21,894	20,831
Bank-owned life insurance	260,228	258,648	255,240
Other real estate owned	7,704	7,810	14,658
Other assets	175,716	177,849	169,714
TOTAL ASSETS	14,843,130	14,724,388	14,137,160
Deposits:
Demand: Noninterest bearing	3,390,428	3,250,537	3,133,460
Interest bearing	5,095,570	5,034,470	4,838,704
Savings	1,630,123	1,561,819	1,512,694
Other time	1,822,175	1,841,315	1,879,509
Total deposits	11,938,296	11,688,141	11,364,367
Securities sold under agreement to repurchase	399,815	454,002	415,949
Short-term borrowings	365,000	92,000
Accrued interest payable	4,259	3,975	3,727
Junior subordinated debt securities		12,888	23,198
Long-term debt	230,000	530,000	365,588
Other liabilities	213,928	219,499	251,288
TOTAL LIABILITIES	13,151,298	13,000,505	12,424,117
SHAREHOLDERS' EQUITY
Common stock, $2.50 par value per share Authorized - 500,000,000 shares; Issued - 91,022,729, 93,696,687 and 94,546,091 shares, respectively	227,557	234,242	236,365
Capital surplus	191,940	271,292	286,994
Accumulated other comprehensive (loss) income	(49,861)	(50,937)	(27,587)
Retained earnings	1,322,196	1,269,286	1,217,271
TOTAL SHAREHOLDERS' EQUITY	1,691,832	1,723,883	1,713,043
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 14,843,130	$ 14,724,388	$ 14,137,160