Selected Quarterly Financial Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Data [Abstract]
Interest Income	$ 9,327	$ 8,576	$ 8,592	$ 8,219	$ 8,305	$ 8,149	$ 7,993	$ 7,956	$ 34,715	$ 32,404	$ 33,377
Interest Expense	887	899	910	921	961	975	991	1,130	3,616	4,057	5,597
NET INTEREST INCOME	8,440	7,677	7,682	7,298	7,344	7,174	7,002	6,826	31,099	28,347	27,780
Net Income	$ 2,306	$ 2,290	$ 1,579	$ 2,013	$ 1,667	$ 2,451	$ 1,923	$ 1,816
Earnings per share basic	$ 0.55	$ 0.55	$ 0.38	$ 0.48	$ 0.40	$ 0.58	$ 0.46	$ 0.44	$ 1.96	$ 1.88	$ 1.96
Earnings per share diluted	$ 0.54	$ 0.54	$ 0.37	$ 0.47	$ 0.39	$ 0.57	$ 0.46	$ 0.43	$ 1.92	$ 1.85	$ 1.95