CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Interest income
Loans, including fees	$ 54,464	$ 49,147
Investment securities
Taxable	9,608	10,437
Tax-exempt	1,117	810
Total interest on investment securities	10,725	11,247
Other earning assets	(1,181)	(1,406)
Total interest income	64,008	58,988
Interest expense
Deposits	4,820	3,316
Short-term borrowings	303	329
Long-term borrowings	299	524
Total interest expense	5,422	4,169
Net interest income	58,586	54,819
Provision for loan and lease losses	2,060	(1,033)
Net interest income after provision for loan and lease losses	56,526	55,852
Noninterest income
Service charges on deposit accounts	4,523	4,772
Trust and wealth management fees	3,634	3,746
Bankcard income	2,620	2,433
Net gains from sales of loans	1,464	396
Gains on sales of investment securities	0	50
FDIC loss sharing income	(1,046)	(508)
Accelerated discount on covered/formerly covered loans	2,092	1,015
Other	4,326	2,271
Total noninterest income	17,613	14,175
Noninterest expenses
Salaries and employee benefits	26,941	25,261
Net occupancy	5,005	5,299
Furniture and equipment	2,153	2,077
Data processing	2,772	2,858
Marketing	888	786
Communication	570	623
Professional services	1,970	1,724
State intangible tax	577	644
FDIC assessments	1,090	1,134
Loss (gain) - other real estate owned	474	451
Loss sharing expense	301	1,569
Other	5,327	5,416
Total noninterest expenses	48,068	47,842
Income before income taxes	26,071	22,185
Income tax expense	8,450	7,081
Net income	$ 17,621	$ 15,104
Earnings per common share
Basic	$ 0.29	$ 0.26
Diluted	$ 0.29	$ 0.26
Cash dividends declared per share	$ 0.16	$ 0.15
Average common shares outstanding - basic	61,013,489	57,091,604
Average common shares outstanding - diluted	61,731,844	57,828,179