CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock	Paid-in capital	Retained earnings	Unearned compensation restricted stock awards	Accumulated other comprehensive income	Total
Balance - Beginning, amount at Dec. 31, 2016	$ 276	$ 42,085	$ 51,521	$ (352)	$ 477	$ 94,007
Balance - Beginning, shares at Dec. 31, 2016	2,758,086
Net income			1,604			1,604
Other comprehensive loss, net of tax					10	10
Common stock dividends declared			(774)			(774)
Stock options exercised, amount	$ 1	312				$ 313
Stock options exercised, shares	12,150					12,150
Issuance of restricted stock, amount		(3)		3
Issuance of restricted stock, shares	(200)
Stock based compensation - restricted stock awards				61		61
Balance - Ending, amount at Mar. 31, 2017	$ 277	42,394	52,351	(288)	487	95,221
Balance - Ending, shares at Mar. 31, 2017	2,770,036
Balance - Beginning, amount at Dec. 31, 2017	$ 279	42,998	54,664	(606)	179	$ 97,514
Balance - Beginning, shares at Dec. 31, 2017	2,785,216					2,785,216
Net income			2,015			$ 2,015
Adoption of new accounting principle			(16)		16
Other comprehensive loss, net of tax					(807)	(807)
Common stock dividends declared			(780)			(780)
Stock options exercised, amount		42				$ 42
Stock options exercised, shares	1,350					1,350
Stock based compensation - restricted stock awards				113		$ 113
Balance - Ending, amount at Mar. 31, 2018	$ 279	$ 43,040	$ 55,883	$ (493)	$ (612)	$ 98,097
Balance - Ending, shares at Mar. 31, 2018	2,786,566					2,786,566