Consolidated Statements of Operations (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 REVENUE:
Loans and leases	$ 102,681	$ 98,836	$ 301,387	$ 296,452
Deposits with other banks	68	310	431	1,395
Available-for-sale securities:
Taxable	6,646	8,218	21,326	25,323
Tax-exempt	3,607	3,866	10,991	11,737
Loans held for sale	920	731	1,885	2,090
Total interest revenue	113,922	111,961	336,020	336,997
Deposits:
Interest bearing demand	1,956	2,061	5,781	7,609
Savings	410	383	1,203	1,318
Other time	5,083	7,271	16,222	22,983
Federal funds purchased and securities sold under agreement to repurchase	84	80	242	213
Long-term debt	612	501	1,860	1,204
Junior subordinated debt	164	1,424	494	7,141
Other			1	(3)
Total interest expense	8,309	11,720	25,803	40,465
Net interest revenue	105,613	100,241	310,217	296,532
Provision for credit losses		500		7,500
Net interest revenue, after provision for credit losses	105,613	99,741	310,217	289,032
NONINTEREST REVENUE:
Mortgage lending	6,938	5,134	19,421	35,372
Credit card, debit card and merchant fees	8,972	8,834	25,382	24,681
Deposit service charges	13,111	13,679	38,084	39,335
Security (losses) gains, net	18	(5)	19	17
Insurance commissions	29,246	23,800	89,466	76,303
Wealth management	5,961	6,057	17,705	17,646
Other	5,032	5,015	15,556	16,587
Total noninterest revenue	69,278	62,514	205,633	209,941
NONINTEREST EXPENSE:
Salaries and employee benefits	77,453	73,532	231,077	231,230
Occupancy, net of rental income	10,313	10,360	30,845	31,174
Equipment	4,205	4,555	12,873	14,088
Deposit insurance assessments	2,125	3,325	5,760	9,068
Voluntary early retirement expense				10,850
Write-off and amortization of bond issue cost	12	2,907	36	2,983
Other	39,591	34,718	107,769	107,626
Total noninterest expense	133,699	129,397	388,360	407,019
Income before income taxes	41,192	32,858	127,490	91,954
Income tax expense	12,414	8,001	39,400	25,537
Net income	$ 28,778	$ 24,857	$ 88,090	$ 66,417
Earnings per share:
Basic (in dollars per share)	$ 0.30	$ 0.26	$ 0.92	$ 0.70
Diluted (in dollars per share)	$ 0.30	$ 0.26	$ 0.92	$ 0.70
Dividends declared per common share (in dollars per share)	$ 0.08	$ 0.05	$ 0.18	$ 0.07