Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets:
Cash and due from banks	$ 714,851	$ 885,121
Interest-bearing deposits	4,577,004	3,646,756
Federal funds sold and resell agreements	8,598	24,248
Total cash and cash equivalents	5,300,453	4,556,125
Securities held to maturity, at amortized cost	2,942,012	3,139,748
Securities available for sale, at estimated fair value	6,911,652	5,895,436
Trading account securities	16,552	16,398
Loans, net of unearned discounts	10,746,784	9,515,700
Less: Allowance for loan losses	(98,312)	(92,438)
Net loans	10,648,472	9,423,262
Premises and equipment, net	397,429	313,331
Goodwill	653,849	536,649
Other intangible assets, net	13,121	6,345
Cash surrender value of life insurance policies	171,142	141,108
Accrued interest receivable and other assets	315,951	284,537
Total assets	27,370,633	24,312,939
Liabilities:
Non-interest-bearing demand deposits	10,162,415	8,311,149
Interest-bearing deposits	13,328,188	12,377,637
Total deposits	23,490,603	20,688,786
Federal funds purchased and repurchase agreements	580,965	668,253
Junior subordinated deferrable interest debentures	137,115	123,712
Other long-term borrowings	100,000	100,000
Accrued interest payable and other liabilities	244,098	218,027
Total liabilities	24,552,781	21,798,778
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 September 30, 2014 and December 31, 2013	144,486	144,486
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 63,632,464 shares issued at September 30, 2014 and 61,632,464 shares issued at December 31, 2013	637	617
Additional paid-in capital	883,121	724,197
Retained earnings	1,672,527	1,575,282
Accumulated other comprehensive income, net of tax	155,276	140,434
Treasury stock, at cost; 574,346 shares at September 30, 2014 and 1,066,021 shares at December 31, 2013	(38,195)	(70,855)
Total shareholders’ equity	2,817,852	2,514,161
Total liabilities and shareholders’ equity	$ 27,370,633	$ 24,312,939