Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
INTEREST INCOME
Interest and fees on loans	$ 155,663	$ 152,030	$ 460,025	$ 442,046
Interest and dividends on investment securities:
Taxable	24,937	25,037	73,897	77,403
Tax exempt	7,917	7,483	23,369	21,484
Other interest	1,489	1,503	4,952	4,814
Total interest income	190,006	186,053	562,243	545,747
INTEREST EXPENSE
Interest on deposits	8,521	6,621	24,281	18,975
Interest on Federal funds purchased and securities sold under agreements to repurchase	248	390	714	1,001
Interest on other short-term funding	83	233	279	629
Interest on long-term funding	10,645	6,179	32,159	18,836
Total interest expense	19,497	13,423	57,433	39,441
NET INTEREST INCOME	170,509	172,630	504,810	506,306
Provision for credit losses	8,000	1,000	17,500	11,000
Net interest income after provision for credit losses	162,509	171,630	487,310	495,306
NONINTEREST INCOME
Trust service fees	12,273	12,218	36,875	35,946
Service charges on deposit accounts	17,385	17,961	48,894	51,773
Card-based and other nondeposit fees	12,618	12,407	38,631	37,493
Insurance commissions	17,561	7,860	57,366	33,828
Brokerage and annuity commissions	3,809	4,040	11,684	12,593
Mortgage banking, net	6,643	6,669	23,992	18,392
Capital market fees, net	2,170	2,939	7,329	7,360
Bank owned life insurance income	2,448	3,506	7,704	10,837
Asset gains, net	95	4,934	3,084	6,561
Investment securities gains, net	2,796	57	4,038	469
Other	2,118	2,317	6,916	5,424
Total noninterest income	79,916	74,908	246,513	220,676
NONINTEREST EXPENSE
Personnel expense	101,134	97,650	304,272	293,141
Occupancy	14,187	13,743	46,178	43,088
Equipment	6,003	6,133	17,514	18,636
Technology	14,748	13,573	46,660	40,891
Business development and advertising	5,964	7,467	18,120	17,606
Other intangible amortization	885	990	2,574	2,972
Loan expense	3,305	3,813	9,982	10,220
Legal and professional fees	4,207	4,604	13,089	13,228
Foreclosure / OREO expense	496	2,083	3,224	5,554
FDIC expense	6,000	6,859	18,500	16,805
Other	14,507	14,938	42,394	45,295
Total noninterest expense	171,436	171,853	522,507	507,436
Income before income taxes	70,989	74,685	211,316	208,546
Income tax expense	21,551	24,478	65,806	66,775
Net income	49,438	50,207	145,510	141,771
Preferred stock dividends	2,184	1,255	4,957	3,777
Net income available to common equity	$ 47,254	$ 48,952	$ 140,553	$ 137,994
Earnings per common share:
Basic (in usd per share)	$ 0.31	$ 0.31	$ 0.93	$ 0.86
Diluted (in usd per share)	$ 0.31	$ 0.31	$ 0.92	$ 0.85
Average common shares outstanding:
Basic (in shares)	148,614	155,925	149,524	159,090
Diluted (in shares)	149,799	156,991	150,704	159,993