Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 365,152	$ 383,372
Interest-bearing bank deposits	150,765	110,579
Federal funds sold	297	515
Securities available for sale, at fair value (amortized cost of $2,758,723 and $2,755,806)	2,790,468	2,691,037
Securities held to maturity (fair value of $2,979,401 and $2,935,856)	2,935,267	2,979,547
Loans held for sale	36,150	28,150
Loans	20,175,812	20,026,411
Less: allowance for loan losses	(195,625)	(194,514)
Loans, net	19,980,187	19,831,897
Property and equipment, net of accumulated depreciation of $238,051 and $225,969	360,298	353,668
Right of use assets, net of accumulated amortization of $6,172	113,319
Prepaid expenses	40,701	35,047
Other real estate and foreclosed assets, net	27,520	26,270
Accrued interest receivable	88,391	86,681
Goodwill	792,084	790,972
Other intangible assets, net	85,967	96,151
Life insurance contracts	591,287	549,300
Deferred tax asset, net		22,967
Funded pension assets, net	172,946	65,125
Other assets	231,064	184,629
Total assets	28,761,863	28,235,907
Deposits
Noninterest-bearing	8,114,632	8,499,027
Interest-bearing	15,121,410	14,651,158
Total deposits	23,236,042	23,150,185
Short-term borrowings	1,641,598	1,589,128
Long-term debt	232,754	224,993
Accrued interest payable	19,060	12,267
Lease liabilities	128,718
Deferred tax liability, net	33,046
Other liabilities	151,730	177,994
Total liabilities	25,442,948	25,154,567
Stockholders' equity:
Common stock	292,716	292,716
Capital surplus	1,737,492	1,725,741
Retained earnings	1,363,910	1,243,592
Accumulated other comprehensive loss, net	(75,203)	(180,709)
Total stockholders' equity	3,318,915	3,081,340
Total liabilities and stockholders' equity	$ 28,761,863	$ 28,235,907
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	87,903,000	87,903,000
Common shares outstanding	85,759,000	85,643,000