CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Common stock	Surplus	Treasury Stock	Retained Earnings	Other Comprehensive Income (loss)	Total
Balance beginning of the period (Footnote 1) at Dec. 31, 2018	$ 6,407	$ 79,919		$ 23,616	$ (390)	$ 109,552
Comprehensive income:
Net income				2,006		2,006
Change in unrealized gains on securities available-for-sale, net of tax					373	373
Total comprehensive income						2,379
Compensation expense related to stock option grants		61				61
Balance ending of the period at Mar. 31, 2019	6,407	79,980		25,622	(17)	111,992
Balance beginning of the period (Footnote 1) at Dec. 31, 2019	6,408	80,196	$ (3)	34,097	(3)	120,695
Comprehensive income:
Net income				2,516		2,516
Change in unrealized gains on securities available-for-sale, net of tax					429	429
Total comprehensive income						2,945
Share-based awards and exercises	6	90				96
Net purchase of treasury stock through publicly announced plans			(5,703)			(5,703)
Balance ending of the period at Mar. 31, 2020	$ 6,414	$ 80,286	$ (5,706)	$ 36,613	$ 426	$ 118,033