Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
INTEREST REVENUE:
Loans and leases	$ 107,086	$ 102,681	$ 312,649	$ 301,387
Deposits with other banks	36	68	398	431
Available-for-sale securities:
Taxable	6,490	6,646	19,758	21,326
Tax-exempt	3,226	3,607	9,938	10,991
Loans held for sale	1,363	920	3,585	1,885
Total interest revenue	118,201	113,922	346,328	336,020
Deposits:
Interest bearing demand	2,209	1,956	6,654	5,781
Savings	431	410	1,269	1,203
Other time	3,646	5,083	11,481	16,222
Federal funds purchased and securities sold under agreement to repurchase	104	84	271	242
Long-term debt	571	612	1,704	1,860
Junior subordinated debt	168	164	496	494
Other	2		1	1
Total interest expense	7,131	8,309	21,876	25,803
Net interest revenue	111,070	105,613	324,452	310,217
Provision for credit losses	(3,000)		(13,000)
Net interest revenue, after provision for credit losses	114,070	105,613	337,452	310,217
NONINTEREST REVENUE:
Mortgage lending	2,339	6,938	25,008	19,421
Credit card, debit card and merchant fees	9,282	8,972	27,119	25,382
Deposit service charges	12,150	13,111	34,929	38,084
Security (losses) gains, net	33	18	88	19
Insurance commissions	28,584	29,246	91,396	89,466
Wealth management	5,567	6,064	17,285	18,015
Other	4,998	4,929	14,757	15,246
Total noninterest revenue	62,953	69,278	210,582	205,633
NONINTEREST EXPENSE:
Salaries and employee benefits	81,354	77,453	242,292	231,077
Occupancy, net of rental income	10,819	10,313	31,432	30,845
Equipment	3,742	4,205	11,740	12,873
Deposit insurance assessments	2,191	2,125	6,879	5,760
Other	28,344	39,603	99,217	107,805
Total noninterest expense	126,450	133,699	391,560	388,360
Income before income taxes	50,573	41,192	156,474	127,490
Income tax expense	16,230	12,414	50,152	39,400
Net income	$ 34,343	$ 28,778	$ 106,322	$ 88,090
Earnings per share:
Basic (in dollars per share)	$ 0.36	$ 0.30	$ 1.10	$ 0.92
Diluted (in dollars per share)	0.36	0.30	1.10	0.92
Dividends declared per common share (in dollars per share)	$ 0.10	$ 0.08	$ 0.25	$ 0.18