Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
INTEREST AND DIVIDEND INCOME:
Interest and fees on loans	$ 45,271	$ 46,041	$ 47,646
Investment income:
Interest and dividends on debt securities	12,644	14,140	18,587
Interest on interest earning deposits with banks and other short-term investments	103	81	107
Total interest and dividend income	58,018	60,262	66,340
INTEREST EXPENSE:
Savings, interest bearing checking and money market accounts	1,167	1,461	1,901
Time deposits $100 thousand and greater	1,135	1,292	2,321
Other time deposits	2,172	2,861	5,383
Securities sold under agreement to repurchase and other short-term debt	2,065	1,623	641
Long-term debt	2,105	3,870	5,978
Total interest expense	8,644	11,107	16,224
Net interest income	49,374	49,155	50,116
Provision (credit) for credit losses	750	(1,750)	4,100
Net interest income after provision (credit) for credit losses	48,624	50,905	46,016
NONINTEREST INCOME:
Changes in fair value on impaired securities	(65)	329	0
Non-credit related (gain) losses on securities not expected to be sold (recognized in other comprehensive income)	10	(498)	0
Net impairment losses	(55)	(169)	0
Net gains (losses) on investment securities	1,049	2,082	1,219
Trust division income	2,516	2,163	1,724
Service charges on deposits	4,298	4,929	5,671
Equity in losses of real estate limited partnerships	(1,766)	(1,672)	(2,049)
Other	4,338	4,298	3,750
Total noninterest income	10,380	11,631	10,315
NONINTEREST EXPENSES:
Compensation and benefits	20,517	20,499	18,858
Occupancy expense	3,824	3,703	3,579
Equipment expense	3,366	2,932	2,826
Legal and professional fees	2,811	2,443	2,499
Marketing	1,733	1,505	1,470
State franchise taxes	1,265	1,151	1,142
FDIC Insurance	936	1,415	1,964
Prepayment penalty	861	3,071	1,548
Other real estate owned ("OREO") expense (income)	193	(298)	142
Other	5,754	6,006	6,070
Total noninterest expenses	41,260	42,427	40,098
Income before provision for income taxes	17,744	20,109	16,233
Provision for income taxes	3,124	4,648	3,754
NET INCOME	$ 14,620	$ 15,461	$ 12,479
Basic earnings per common share	$ 2.35	$ 2.51	$ 2.04
Diluted earnings per common share	$ 2.35	$ 2.51	$ 2.04
Weighted average common shares outstanding	6,212,187	6,167,446	6,105,909
Weighted average diluted shares outstanding	6,223,769	6,171,473	6,107,389