Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income
Loans	$ 158,947	$ 137,800	$ 142,218
Securities
Taxable	13,397	13,120	19,831
Tax-exempt	8,012	8,194	8,095
Other	248	199	543
Total interest income	180,604	159,313	170,687
Interest expense
Deposits	17,050	19,030	31,729
Borrowings	6,353	6,945	9,672
Total interest expense	23,403	25,975	41,401
Net interest income	157,201	133,338	129,286
Provision for loan losses	10,350	18,125	22,350
Net interest income after provision for loan losses	146,851	115,213	106,936
Noninterest income
Service charges on deposit accounts	20,535	18,612	19,111
Fees and commissions	19,961	17,595	13,126
Insurance commissions	4,976	3,630	3,298
Wealth Management revenue	7,654	6,926	4,864
Gains on sales of securities	54	1,894	5,057
Other-than-temporary-impairment losses on securities available for sale	0	0	(15,445)
Non-credit related portion of other-than-temporary impairment on securities, recognized in other comprehensive income	0	0	15,183
Net impairment losses on securities	0	0	(262)
BOLI income	4,085	3,370	2,821
Gains on sales of mortgage loans held for sale	11,573	12,499	4,133
Gain on acquisition	0	0	9,344
Other	3,133	4,185	3,207
Total noninterest income	71,971	68,711	64,699
Noninterest expense
Salaries and employee benefits	98,780	81,002	66,135
Data processing	8,870	8,724	7,297
Net occupancy and equipment	16,957	14,597	13,552
Other real estate owned	6,966	13,596	15,326
Professional fees	5,540	4,241	4,173
Advertising and public relations	5,630	4,835	4,085
Intangible amortization	2,869	1,381	1,742
Communications	5,147	4,212	4,500
Merger-related expenses	6,027	0	1,651
Extinguishment of debt	0	898	1,903
Other	16,290	16,973	16,596
Total noninterest expense	173,076	150,459	136,960
Income before income taxes	45,746	33,465	34,675
Income taxes	12,259	6,828	9,043
Net income	$ 33,487	$ 26,637	$ 25,632
Basic earnings per share (usd per share)	$ 1.23	$ 1.06	$ 1.02
Diluted earnings per share (usd per share)	$ 1.22	$ 1.06	$ 1.02
Cash dividends per common share (usd per share)	$ 0.68	$ 0.68	$ 0.68