Quarterly Financial Data (Summary of Selected Quarterly Consolidated Financial Data) (Details) (USD $) In Thousands, except Per 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
Interest income	$ 9,423	$ 9,612	$ 9,649	$ 9,576	$ 9,556	$ 9,726	$ 9,657	$ 9,334	$ 38,260	$ 38,273	$ 40,309
Interest expense	1,406	1,436	1,624	1,900	2,067	2,087	2,131	1,914	6,366	8,199	10,245
Net interest income	8,017	8,176	8,025	7,676	7,489	7,639	7,526	7,420	31,894	30,074	30,064
Provision for loan losses	750	850	500	(750)	10,300	616	1,500	3,550	1,350	15,966	16,600
Non-interest income	2,852	1,831	2,489	1,646	3,423	3,955	2,076	1,127	8,828	10,581	2,620
Non-interest expense	9,269	8,787	9,010	8,836	14,092	9,105	9,011	8,992	35,902	41,200	32,848
Total provision (benefit) for income taxes	(54)	(28)	7	(69)	9,598	509	(429)	(1,487)	(144)	8,191	(6,074)
Net income (loss)	904	398	1,007	1,305	(23,078)	1,364	(480)	(2,508)	3,614	(24,702)	(10,690)
Net income (loss) per share: Basic	$ 0.03	$ 0.02	$ 0.04	$ 0.05	$ (0.89)	$ 0.05	$ (0.02)	$ (0.10)	$ 0.14	$ (0.95)	$ (0.57)
Diluted	$ 0.03	$ 0.02	$ 0.04	$ 0.05	$ (0.89)	$ 0.05	$ (0.02)	$ (0.10)	$ 0.14	$ (0.95)	$ (0.57)
Parent Company [Member]
Net interest income									34	33	33
Total provision (benefit) for income taxes									(496)	(406)
Net income (loss)									$ 3,614	$ (24,702)	$ (10,690)