Condensed Financial Statements - Parent Company Only (Schedule of Condensed Cash Flow Statement) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities
Net income	$ 2,022	$ 1,963	$ 1,738	$ 1,608	$ 1,528	$ 1,283	$ 1,711	$ 1,821	$ 7,208	$ 7,331	$ 6,343
Adjustments to reconcile net income to net cash provided by operating activities
Stock based compensation									515	489	319
(Increase) decrease in other assets									(1,281)	1,959	1,523
Decrease (increase) deferred income tax benefit									1,887	(555)	(750)
Net Cash Provided by Operating Activities									10,102	12,915	12,497
Cash Flows from Financing Activities
Dividends paid									(1,804)	(1,814)	(1,916)
Proceeds from subordinated notes											23,000
Redemption of Small Business Lending Fund Preferred Stock											(20,000)
Exercise of stock options									155
Net change in ESOP loan									(586)	147	146
Repurchase of common stock										(865)	(1,827)
Net cash used in financing activities									63,616	182,335	51,863
(Decrease) increase in cash									4,154	124	(10,234)
Cash and cash equivalents - January 1				11,139				21,373	11,263	11,139	21,373
Cash and cash equivalents - December 31	11,263				11,139				15,417	11,263	11,139
Parent Company [Member]
Cash Flows from Operating Activities
Net income									7,208	7,331	6,343
Adjustments to reconcile net income to net cash provided by operating activities
Equity in undistributed earnings of subsidiary									(2,894)	(4,396)	(5,528)
Stock based compensation									515	489	139
(Increase) decrease in other assets									(2,446)	(145)	(284)
Decrease (increase) deferred income tax benefit									(29)	55	23
(Decrease) increase in current liabilities									327	(157)	459
Net Cash Provided by Operating Activities									2,681	3,177	1,152
Cash Flows from Financing Activities
Dividends paid									(1,804)	(1,814)	(1,916)
Downstream of capital to subsidiary										180	(78)
Proceeds from subordinated notes											23,000
Redemption of Small Business Lending Fund Preferred Stock											(20,000)
Exercise of stock options									155
Net change in ESOP loan									(586)	147	146
Repurchase of common stock										(865)	(1,827)
Net cash used in financing activities									(2,235)	(2,352)	(675)
(Decrease) increase in cash									446	825	477
Cash and cash equivalents - January 1				$ 1,541				$ 1,064	2,366	1,541	1,064
Cash and cash equivalents - December 31	$ 2,366				$ 1,541				$ 2,812	$ 2,366	$ 1,541