CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest income:
Loans and leases	$ 40,610	$ 40,741	$ 120,824	$ 123,750
Investment securities, taxable	3,913	4,694	12,574	14,088
Investment securities, tax-exempt	826	934	2,526	3,124
Other	231	217	688	707
Total interest income	45,580	46,586	136,612	141,669
Interest expense:
Deposits	5,419	7,756	16,868	24,273
Short-term borrowings	36	77	136	240
Subordinated notes	1,647	1,647	4,942	4,942
Long-term debt and mandatorily redeemable securities	571	480	1,399	1,144
Total interest expense	7,673	9,960	23,345	30,599
Net interest income	37,907	36,626	113,267	111,070
Provision for loan and lease losses	650	1,260	4,959	3,525
Net interest income after provision for loan and lease losses	37,257	35,366	108,308	107,545
Noninterest income:
Trust fees	4,055	3,902	12,407	12,305
Service charges on deposit accounts	4,708	4,748	14,028	13,622
Mortgage banking income	2,020	1,056	5,464	2,335
Insurance commissions	1,483	1,212	4,051	3,416
Equipment rental income	4,604	5,814	14,620	17,861
Other income	3,346	3,084	9,556	9,382
Investment securities and other investment gains	89	414	492	1,686
Total noninterest income	20,305	20,230	60,618	60,607
Noninterest expense:
Salaries and employee benefits	20,982	19,476	61,668	57,249
Net occupancy expense	1,652	2,237	5,660	6,608
Furniture and equipment expense	3,817	3,519	11,155	10,429
Depreciation - leased equipment	3,795	4,650	11,909	14,250
Professional fees	1,385	1,326	4,232	3,502
Supplies and communication	1,387	1,312	4,165	4,022
FDIC and other insurance	913	874	2,716	3,508
Business development and marketing expense	1,008	968	2,925	2,454
Loan and lease collection and repossession expense	1,866	1,387	4,346	4,211
Other expense	388	1,399	3,043	5,334
Total noninterest expense	37,193	37,148	111,819	111,567
Income before income taxes	20,369	18,448	57,107	56,585
Income tax expense	7,364	6,908	19,820	19,572
Net income	$ 13,005	$ 11,540	$ 37,287	$ 37,013
Per common share
Basic net income per common share (in dollars per share)	$ 0.53	$ 0.47	$ 1.52	$ 1.51
Diluted net income per common share (in dollars per share)	$ 0.53	$ 0.47	$ 1.51	$ 1.51
Dividends (in dollars per share)	$ 0.17	$ 0.16	$ 0.49	$ 0.48
Basic weighted average common shares outstanding (in shares)	24,279,178	24,213,063	24,267,535	24,246,041
Diluted weighted average common shares outstanding (in shares)	24,289,495	24,223,432	24,278,160	24,255,357