Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Cash and due from banks	$ 509,506	$ 561,838
Interest-bearing deposits	3,989,375	3,560,865
Federal funds sold and resell agreements	30,292	18,742
Total cash and cash equivalents	4,529,173	4,141,445
Securities held to maturity, at amortized cost	1,640,255	2,250,460
Securities available for sale, at estimated fair value	10,612,493	10,203,277
Trading account securities	17,094	16,703
Loans, net of unearned discounts	12,185,645	11,975,392
Less: Allowance for loan losses	(153,056)	(153,045)
Net loans	12,032,589	11,822,347
Premises and equipment, net	521,092	525,821
Goodwill	654,952	654,952
Other intangible assets, net	6,318	6,776
Cash surrender value of life insurance policies	178,206	177,884
Accrued interest receivable and other assets	332,533	396,654
Total assets	30,524,705	30,196,319
Liabilities:
Non-interest-bearing demand deposits	10,909,415	10,513,369
Interest-bearing deposits	15,232,749	15,298,206
Total deposits	26,142,164	25,811,575
Federal funds purchased and repurchase agreements	895,200	976,992
Junior subordinated deferrable interest debentures, net of unamortized issuance costs	136,141	136,127
Subordinated notes, net of unamortized issuance costs	98,446	99,990
Accrued interest payable and other liabilities	155,376	169,107
Total liabilities	27,427,327	27,193,791
Shareholders’ Equity:
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; 6,000,000 Series A shares ($25 liquidation preference) issued at March 31, 2017 and December 31, 2016	144,486	144,486
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 63,915,806 shares issued at March 31, 2017 and 63,632,464 shares issued at December 31, 2016	640	637
Additional paid-in capital	926,005	906,732
Retained earnings	2,032,097	1,985,569
Accumulated other comprehensive income, net of tax	(5,850)	(24,623)
Treasury stock, at cost; none at March 31, 2017 and 158,243 shares at December 31, 2016	0	(10,273)
Total shareholders’ equity	3,097,378	3,002,528
Total liabilities and shareholders’ equity	$ 30,524,705	$ 30,196,319