Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 377,334	$ 367,092
Interest bearing funds with Federal Reserve Bank	904,406	829,887
Interest earning deposits with banks	24,541	17,387
Federal funds sold and securities purchased under resale agreements	77,685	69,819
Trading account assets, at fair value	1,001	5,097
Mortgage loans held for sale, at fair value	87,824	59,275
Investment securities available for sale, at fair value	3,580,359	3,587,818
Loans, net of deferred fees and costs	23,060,908	22,429,565
Allowance for loan losses	(255,076)	(252,496)
Loans, net	22,805,832	22,177,069
Premises and equipment, net	424,967	445,155
Goodwill	24,431	24,431
Other real estate	33,289	47,030
Deferred tax asset, net	425,160	511,948
Other assets	692,862	650,645
Total assets	29,459,691	28,792,653
LIABILITIES AND SHAREHOLDERS' EQUITY
Non-interest bearing deposits	6,934,443	6,732,970
Interest bearing deposits, excluding brokered deposits	15,495,318	15,434,171
Brokered deposits	1,496,161	1,075,520
Total deposits	23,925,922	23,242,661
Federal funds purchased and securities sold under repurchase agreements	247,179	177,025
Long-term debt	2,135,892	2,186,893
Other liabilities	199,039	185,878
Total liabilities	26,508,032	25,792,457
Shareholders' Equity
Series C Preferred Stock – no par value. Authorized 100,000,000 shares; 5,200,000 shares issued and outstanding at June 30, 2016 and December 31, 2015	125,980	125,980
Common stock - $1.00 par value. Authorized 342,857,143 shares; 141,007,636 issued at June 30, 2016 and 140,592,409 issued at December 31, 2015; 124,047,659 outstanding at June 30, 2016 and 129,547,032 outstanding at December 31, 2015	141,008	140,592
Additional paid-in capital	2,993,985	2,989,981
Treasury stock, at cost – 16,959,977 shares at June 30, 2016 and 11,045,377 shares at December 31, 2015	(573,058)	(401,511)
Accumulated other comprehensive gain (loss)	11,005	(29,819)
Retained earnings	252,739	174,973
Total shareholders’ equity	2,951,659	3,000,196
Total liabilities and shareholders' equity	$ 29,459,691	$ 28,792,653