Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Total
Balance at Dec. 31, 2017	$ 6,047	$ 45,442	$ 50,595	$ (5,662)	$ (5,051)	$ 91,371
Increase (Decrease) in Stockholders' Equity
Net income	0	0	2,090	0	0	2,090
Other comprehensive income (loss)	0	0	0	(1,673)	0	(1,673)
Purchase of treasury stock	0	0	0	0	(112)	(112)
Cash dividends declared, common stock	0	0	(405)	0	0	(405)
Balance at Mar. 31, 2018	6,047	45,442	52,280	(7,335)	(5,163)	91,271
Balance at Dec. 31, 2018	6,279	50,173	54,105	(6,099)	(5,044)	99,414
Increase (Decrease) in Stockholders' Equity
Net income	0	0	4,666	0	0	4,666
Other comprehensive income (loss)	0	0	0	1,393	0	1,393
Cash dividends declared, common stock	0	0	(603)	0	0	(603)
Balance at Mar. 31, 2019	$ 6,279	$ 50,173	$ 58,168	$ (4,706)	$ (5,044)	$ 104,870