Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Interest income:
Interest and fees on loans	$ 59,371	$ 53,718
Interest and dividends on investment securities:
Taxable	7,971	7,640
Exempt from federal taxes	1,059	1,097
Interest on deposits in banks	389	231
Interest on federal funds sold	2	1
Total interest income	68,792	62,687
Interest expense:
Interest on deposits	3,309	3,424
Interest on securities sold under repurchase agreements	54	66
Interest on long-term debt	515	473
Interest on subordinated debentures held by subsidiary trusts	589	588
Total interest expense	4,467	4,551
Net interest income	64,325	58,136
Provision for loan losses	1,095	(5,000)
Net interest income after provision for loan losses	63,230	63,136
Non-interest income:
Other service charges, commissions and fees	9,867	9,156
Income from the origination and sale of loans	5,906	4,660
Investment Advisory, Management and Administrative Fees	4,937	4,455
Service charges on deposit accounts	3,944	3,875
Investment securities gains, net	6	71
Other income	3,122	1,889
Total non-interest income	27,782	24,106
Non-interest expense:
Salaries and wages	25,349	22,411
Employee benefits	7,780	8,313
Occupancy, net	4,492	4,239
Furniture and equipment	3,793	3,201
Outsourced technology services	2,463	2,300
OREO expense, net of income	(61)	(19)
Professional fees	1,301	1,370
FDIC insurance premiums	1,142	1,116
Mortgage servicing rights amortization	619	600
Mortgage servicing rights impairment recovery	(15)	(45)
Core deposit intangibles amortization	855	354
Other expenses	11,804	10,498
Non-core acquisition expenses	70	0
Total non-interest expense	59,592	54,338
Income before income tax expense	31,420	32,904
Income tax expense	10,440	11,511
Net income	$ 20,980	$ 21,393
Basic earnings per common share	$ 0.46	$ 0.49
Diluted earnings per common share	$ 0.46	$ 0.48