Consolidated Statements of Income Statement (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Interest Income:
Interest and fees on loans	$ 49,410	$ 57,332	$ 64,701
Interest and dividends on taxable investment securities	24,149	29,558	34,522
Interest on tax-exempt investment securities	1,550	2,354	2,811
Other interest income	24	91	71
Total interest income	75,133	89,335	102,105
Interest Expense:
Interest on deposits	13,930	19,122	26,123
Interest on short-term borrowings	103	262	482
Interest on long-term borrowings	5,142	8,063	11,677
Interest on junior subordinated notes held by subsidiary trust	1,979	1,986	1,980
Total interest expense	21,154	29,433	40,262
Net interest income	53,979	59,902	61,843
Provision for loan losses	7,998	26,916	25,721
Net interest income after provision for loan losses	45,981	32,986	36,122
Gross impairment losses on investment securities	0	(1,620)	(7,406)
Less: Non-credit losses included in other comprehensive income	0	166	301
Net impairment losses on investment securities	0	(1,786)	(7,707)
Other Income:
Deposit account service charges	9,765	9,581	10,390
Insurance income	9,265	8,846	9,390
Trust and investment income	5,548	5,348	4,722
Electronic banking income	5,142	4,686	3,954
Mortgage banking income	1,687	1,566	1,719
Bank owned life insurance	351	608	1,051
Net gain on investment securities	473	6,852	1,446
Net loss on asset disposals and other transactions	(916)	(6,891)	(103)
Other non-interest income	1,186	999	824
Total other income	32,501	31,595	33,393
Other Expenses:
Salaries and employee benefit costs	33,626	29,222	29,394
Net occupancy and equipment	5,885	5,781	5,756
Professional fees	3,531	3,108	3,042
FDIC insurance	1,867	2,470	3,442
Electronic banking expense	2,692	2,453	2,401
Data processing and software	1,893	2,032	2,417
Foreclosed real estate and other loan expenses	1,213	1,675	1,067
Franchise tax	1,505	1,576	1,601
Amortization of other intangible assets	586	918	1,252
Communication expense	1,223	1,188	1,270
Other non-interest expense	7,310	6,619	7,040
Total other expenses	61,331	57,042	58,682
Income before income taxes	17,151	5,753	3,126
Income taxes expense (benefit)	4,596	172	(1,064)
Net income	12,555	5,581	4,190
Preferred dividends	1,343	2,052	1,876
Net income available to common shareholders	$ 11,212	$ 3,529	$ 2,314
Earnings per common share - basic	$ 1.07	$ 0.34	$ 0.22
Earnings per common share - diluted	$ 1.07	$ 0.34	$ 0.22
Weighted-average number of common shares outstanding - basic	10,482,318	10,424,474	10,363,975
Weighted-average number of common shares outstanding - diluted	10,482,318	10,431,990	10,374,792