Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks	$ 380,799	$ 480,998
Interest-bearing deposits in banks	83,018	216,426
Total cash and cash equivalents	463,817	697,424
Investment securities:
Held-to-maturity	2,674,093	2,903,609
Available-for-sale	3,967,735	3,545,288
Other investments	148,172	148,654
Loans held for sale	5,472	13,428
Loans	16,076,945	15,326,147
Allowance for loan losses	(153,691)	(143,649)
Net loans	15,923,254	15,182,498
Premises and equipment, net	319,488	332,297
Goodwill	741,740	741,740
Intangible assets	60,628	71,020
FDIC acquired other real estate	2,134	49,641
Accrued interest receivable and other assets	1,218,071	1,216,748
Total assets	25,524,604	24,902,347
Deposits:
Noninterest-bearing	5,942,248	5,786,662
Interest-bearing	3,476,729	3,028,888
Savings and money market accounts	8,450,123	8,399,612
Certificates and other time deposits	2,238,903	2,289,503
Total deposits	20,108,003	19,504,665
Federal funds purchased and securities sold under agreements to repurchase	1,037,075	1,272,591
Wholesale borrowings	580,648	428,071
Long-term debt	505,173	505,192
Accrued taxes, expenses and other liabilities	353,610	357,547
Total liabilities	22,584,509	22,068,066
Shareholders’ equity:
5.875% Non-Cumulative Perpetual Preferred stock, Series A, without par value: authorized 115,000 shares; 100,000 issued	100,000	100,000
Common stock warrant	0	3,000
Common Stock, without par value; authorized 300,000,000 shares; issued: December 31, 2015 - 170,183,515 shares; December 31, 2014 - 170,183,515 shares	127,937	127,937
Capital surplus	1,386,677	1,393,090
Accumulated other comprehensive loss	(79,274)	(71,892)
Retained earnings	1,519,438	1,404,717
Treasury stock, at cost: December 31, 2015 - 4,425,927; December 31, 2014 - 4,793,566 shares	(114,683)	(122,571)
Total shareholders’ equity	2,940,095	2,834,281
Total liabilities and shareholders’ equity	$ 25,524,604	$ 24,902,347