Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2018	5,137,476
Balance at Dec. 31, 2018	$ 6,944	$ 62,005	$ (2,017)	$ 66,932
Net income		3,818		3,818
Other comprehensive income (loss)			1,831	1,831
Exercise of stock options and tax effect (in shares)	13,400
Exercise of stock options and tax effect	$ 76			76
Stock-based compensation expense	$ 50			50
Balance (in shares) at Mar. 31, 2019	5,150,876
Balance at Mar. 31, 2019	$ 7,070	65,823	(186)	72,707
Balance (in shares) at Dec. 31, 2019	5,165,760
Balance at Dec. 31, 2019	$ 7,312	75,144	2,049	84,505
Net income		3,316		3,316
Other comprehensive income (loss)			2,293	2,293
Exercise of stock options and tax effect (in shares)	10,272
Exercise of stock options and tax effect	$ 35			35
Stock-based compensation expense	$ 78			78
Balance (in shares) at Mar. 31, 2020	5,176,032
Balance at Mar. 31, 2020	$ 7,425	$ 78,460	$ 4,342	$ 90,227