Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest income:
Loans, including fees	$ 217,288	$ 217,982	$ 644,392	$ 650,192
Investment securities available for sale	14,029	13,584	43,775	37,302
Trading account assets	106	155	357	433
Mortgage loans held for sale	701	869	1,719	3,987
Federal Reserve Bank balances	562	814	1,561	2,498
Other earning assets	708	448	2,185	1,343
Total interest income	233,394	233,852	693,989	695,755
Interest expense:
Deposits	13,504	16,354	41,246	48,964
Federal funds purchased and securities sold under repurchase agreements	35	72	186	242
Long-term debt	13,592	13,456	40,728	40,688
Total interest expense	27,131	29,882	82,160	89,894
Net interest income	206,263	203,970	611,829	605,861
Provision for loan losses	3,843	6,761	25,638	55,534
Net interest income after provision for loan losses	202,420	197,209	586,191	550,327
Non-interest income:
Service charges on deposit accounts	20,159	19,426	58,610	58,142
Fiduciary and asset management fees	11,207	10,389	33,536	32,471
Brokerage revenue	7,281	6,636	20,201	21,231
Mortgage banking income	4,665	5,314	13,459	19,569
Bankcard fees	8,182	7,760	24,394	22,662
Investment securities gains, net	0	1,124	1,331	2,571
Other fee income	4,704	5,199	14,495	16,461
(Decrease) increase in fair value of private equity investments, net	(144)	284	(513)	(856)
Gain on sale of Memphis branches, net	0	0	5,789	0
Other non-interest income	7,931	7,446	26,253	21,139
Total non-interest income	63,985	63,578	197,555	193,390
Non-interest expense:
Salaries and other personnel expense	93,870	92,794	279,855	276,190
Net occupancy and equipment expense	26,956	26,475	79,436	77,025
Third-party processing expense	10,044	10,151	29,604	30,446
FDIC insurance and other regulatory fees	8,013	7,639	25,781	24,059
Professional fees	2,526	11,410	18,427	28,922
Advertising expense	7,177	3,114	15,935	6,513
Foreclosed real estate expense, net	9,074	10,359	18,818	28,800
Losses (gains) on other loans held for sale, net	(176)	408	2,050	487
Visa indemnification charges	1,979	0	2,731	801
Restructuring charges	809	687	17,101	7,295
Other operating expenses	33,477	24,291	70,377	70,261
Total non-interest expense	193,749	187,328	560,115	550,799
Income before income taxes	72,656	73,459	223,631	192,918
Income tax expense	25,868	27,765	81,554	72,114
Net income	46,788	45,694	142,077	120,804
Dividends and accretion of discount on preferred stock	2,559	8,506	7,678	38,100
Net income available to common shareholders	$ 44,229	$ 37,188	$ 134,399	$ 82,704
Net income per common share, basic	$ 0.32	$ 0.27	$ 0.97	$ 0.67
Net income per common share, diluted	$ 0.32	$ 0.27	$ 0.96	$ 0.62
Weighted average common shares outstanding, basic	139,043	136,671	138,989	123,652
Weighted average common shares outstanding, diluted	139,726	137,097	139,600	132,476