Summarized Quarterly Information (Unaudited) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summarized Quarterly Information (Unaudited) [Abstract]
Interest Income, Operating	$ 17,575	$ 16,942	$ 17,341	$ 17,612	$ 18,475	$ 18,400	$ 18,941	$ 19,317
Interest Expense	3,465	3,621	3,729	4,180	4,686	5,136	5,510	5,822	14,995	21,154	29,433
Net interest income	14,110	13,321	13,612	13,432	13,789	13,264	13,431	13,495	54,475	53,979	59,902
Provision for Loan and Lease Losses	(503)	(956)	(1,120)	(2,137)	(473)	865	2,295	5,311
Gains (Losses) on Sales of Assets	(1,060)	(161)	(43)	(3,062)	(809)	389	(556)	60	(4,326)	(916)	(6,891)
Gain (Loss) on Sale of Securities, Net	273	112	0	3,163	0	57	56	360	3,548	473	6,852
Noninterest Income, Other Operating Income	8,819	8,572	8,498	9,082	8,288	8,391	7,891	8,374
Amortization of Intangible Assets	159	134	109	107	131	141	152	162
FDIC insurance	213	257	223	309	315	440	450	662	1,002	1,867	2,470
Other Expenses	16,734	15,275	15,354	14,600	16,118	14,849	14,117	13,794
Income Tax Expense (Benefit)	1,665	2,310	2,471	3,079	1,333	1,885	887	491	9,525	4,596	172
Net income	3,874	4,824	5,030	6,657	3,844	3,921	2,921	1,869	20,385	12,555	5,581
Preferred dividends	0	0	0	0	345	237	238	523	0	1,343	2,052
Net Income (Loss) Available to Common Stockholders, Basic	$ 3,874	$ 4,824	$ 5,030	$ 6,657	$ 3,499	$ 3,684	$ 2,683	$ 1,346	$ 20,385	$ 11,212	$ 3,529
Earnings per common share - basic	$ 0.36	$ 0.45	$ 0.47	$ 0.63	$ 0.33	$ 0.35	$ 0.26	$ 0.13	$ 1.92	$ 1.07	$ 0.34
Earnings per common share - diluted	$ 0.36	$ 0.45	$ 0.47	$ 0.63	$ 0.33	$ 0.35	$ 0.26	$ 0.13	$ 1.92	$ 1.07	$ 0.34
Weighted-average number of common shares outstanding - basic	10,542,810	10,530,800	10,524,429	10,513,388	10,494,210	10,484,609	10,478,362	10,471,819	10,527,885	10,482,318	10,424,474
Weighted-average number of common shares outstanding - diluted	10,542,810	10,530,876	10,524,429	10,513,388	10,514,960	10,519,673	10,507,895	10,477,360	10,528,286	10,482,318	10,431,990