Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Loans:	$ 10,757,236	$ 10,540,383
Allowance for loan losses	(93,323)	(91,649)
Net loans	10,663,913	10,448,734
Loans held for sale	1,934	5,279
Investment securities:
Available for sale	6,551,593	6,466,334
Held to maturity (fair value of $1,114,163 and $1,106,027, respectively)	1,206,639	1,115,932
Trading securities	75,494	39,536
Other securities	67,910	68,306
Total investment securities	7,901,636	7,690,108
Federal funds sold and securities purchased under agreements to resell	196,467	324,327
Interest-bearing due from banks	374,570	715,823
Cash and due from banks	373,671	422,117
Premises and equipment, net	282,398	289,007
Accrued income	97,035	99,045
Goodwill	228,396	228,396
Other intangibles, net	31,622	34,491
Other assets	424,495	425,205
Total assets	20,576,137	20,682,532
Deposits:
Noninterest-bearing demand	6,202,246	6,654,584
Interest-bearing demand and savings	8,622,219	8,780,309
Time deposits under $250,000	594,967	613,589
Time deposits of $250,000 or more	475,752	522,132
Total deposits	15,895,184	16,570,614
Federal funds purchased and repurchase agreements	2,390,364	1,856,937
Long-term debt	76,104	76,772
Accrued expenses and taxes	142,987	172,967
Other liabilities	60,620	42,858
Total liabilities	18,565,259	18,720,148
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized, 55,056,730 shares issued, and 49,850,194 and 49,673,056 shares outstanding, respectively	55,057	55,057
Capital surplus	1,033,225	1,033,419
Retained earnings	1,174,587	1,142,887
Accumulated other comprehensive loss, net	(44,159)	(57,542)
Treasury stock, 5,206,536 and 5,383,674 shares, at cost, respectively	(207,832)	(211,437)
Total shareholders' equity	2,010,878	1,962,384
Total liabilities and shareholders' equity	$ 20,576,137	$ 20,682,532