Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest, fee, and dividend income
Interest and fees on loans	$ 50,509	$ 51,126	$ 100,717	$ 101,986
Securities available for sale	7,108	7,947	14,474	15,851
Securities held to maturity	617	745	1,257	1,545
Other	413	440	805	933
Total interest, fee, and dividend income	58,647	60,258	117,253	120,315
Interest expense
Deposits	4,834	6,051	9,977	12,338
Short-term borrowings	48	52	89	110
Long-term debt	3,580	3,591	7,161	7,162
Trust preferred debentures	434	400	883	1,289
Total interest expense	8,896	10,094	18,110	20,899
Net interest income	49,751	50,164	99,143	99,416
Provision for loan losses	4,103	6,021	8,574	9,986
Net interest income after provision for loan losses	45,648	44,143	90,569	89,430
Noninterest income
Insurance and other financial services revenue	5,279	5,025	11,433	10,798
Service charges on deposit accounts	4,571	5,455	8,912	10,527
ATM and debit card fees	3,063	2,928	6,025	5,596
Retirement plan administration fees	2,411	2,268	4,744	4,439
Trust	2,312	2,258	4,441	4,294
Bank owned life insurance	618	660	1,589	1,695
Net securities gains	97	59	552	86
Other	2,331	1,208	6,042	2,552
Total noninterest income	20,682	19,861	43,738	39,987
Noninterest expense
Salaries and employee benefits	24,992	24,035	51,717	49,039
Occupancy	4,222	3,987	8,713	8,509
Data processing and communications	3,431	3,117	6,689	6,031
Professional fees and outside services	2,388	2,088	5,113	4,154
Equipment	2,409	2,180	4,789	4,370
Office supplies and postage	1,574	1,342	3,245	2,887
FDIC expenses	942	965	1,873	2,461
Advertising	805	1,033	1,607	1,601
Amortization of intangible assets	841	771	1,660	1,504
Loan collection and other real estate owned	799	443	1,437	1,162
Merger expenses	826	0	1,337	0
Other	4,161	3,196	7,684	6,500
Total noninterest expense	47,390	43,157	95,864	88,218
Income before income tax expense	18,940	20,847	38,443	41,199
Income tax expense	5,683	6,192	11,536	12,237
Net income	$ 13,257	$ 14,655	$ 26,907	$ 28,962
Earnings per share
Basic (in dollars per share)	$ 0.40	$ 0.43	$ 0.81	$ 0.85
Diluted (in dollars per share)	$ 0.40	$ 0.43	$ 0.80	$ 0.84