Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Income:
Interest and fees on loans	$ 48,238	$ 49,410	$ 57,332
Interest and dividends on taxable investment securities	19,778	24,149	29,558
Interest on tax-exempt investment securities	1,434	1,550	2,354
Other interest income	20	24	91
Total interest income	69,470	75,133	89,335
Interest Expense:
Interest on deposits	9,059	13,930	19,122
Interest on short-term borrowings	74	103	262
Interest on long-term borrowings	3,949	5,142	8,063
Interest on junior subordinated notes held by subsidiary trust	1,913	1,979	1,986
Total interest expense	14,995	21,154	29,433
Net interest income	54,475	53,979	59,902
(Recovery of) provision for loan losses	(4,716)	7,998	26,916
Net interest income after (recovery of) provision for loan losses	59,191	45,981	32,986
Gross impairment losses on investment securities	0	0	(1,620)
Less: Non-credit losses included in other comprehensive income	0	0	166
Net impairment losses on investment securities	0	0	(1,786)
Other Income:
Insurance income	9,844	9,265	8,846
Deposit account service charges	8,965	9,765	9,581
Trust and investment income	6,129	5,548	5,348
Electronic banking income	5,955	5,142	4,686
Mortgage banking income	2,877	1,687	1,566
Net gain on investment securities	3,548	473	6,852
Net loss on assets	(4,326)	(916)	(6,891)
Other non-interest income	1,201	1,537	1,607
Total other income	34,193	32,501	31,595
Other Expenses:
Salaries and employee benefit costs	33,426	33,626	29,222
Net occupancy and equipment	6,094	5,885	5,781
Professional fees	4,370	3,531	3,108
Electronic banking expense	3,342	2,692	2,453
Marketing expense	2,682	1,765	1,023
Data processing and software	1,979	1,893	2,032
Franchise tax	1,486	1,505	1,576
Communication expense	1,285	1,223	1,188
Foreclosed real estate and other loan expenses	1,001	1,213	1,675
FDIC insurance	1,002	1,867	2,470
Amortization of other intangible assets	509	586	918
Other non-interest expense	6,298	5,545	5,596
Total other expenses	63,474	61,331	57,042
Income before income taxes	29,910	17,151	5,753
Income tax expense	9,525	4,596	172
Net income	20,385	12,555	5,581
Preferred dividends	0	1,343	2,052
Net income available to common shareholders	$ 20,385	$ 11,212	$ 3,529
Earnings per common share - basic	$ 1.92	$ 1.07	$ 0.34
Earnings per common share - diluted	$ 1.92	$ 1.07	$ 0.34
Weighted-average number of common shares outstanding - basic	10,527,885	10,482,318	10,424,474
Weighted-average number of common shares outstanding - diluted	10,528,286	10,482,318	10,431,990