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	4,997	0	0	4,997
Other comprehensive income (loss)	0	0	0	(2,072)	0	(2,072)
Purchase of treasury stock	0	0	0	0	(179)	(179)
Stock dividend	0	5,014	(5,014)	0	0	0
Cash dividends declared, common stock	0	0	(984)	0	0	(984)
Balance at Jun. 30, 2018	6,047	50,456	49,594	(7,734)	(5,230)	93,133
Balance at Mar. 31, 2018	6,047	45,442	52,280	(7,335)	(5,163)	91,271
Increase (Decrease) in Stockholders' Equity
Net income	0	0	2,907	0	0	2,907
Other comprehensive income (loss)	0	0	0	(399)	0	(399)
Purchase of treasury stock	0	0	0	0	(67)	(67)
Stock dividend	0	5,014	(5,014)	0	0	0
Cash dividends declared, common stock	0	0	(579)	0	0	(579)
Balance at Jun. 30, 2018	6,047	50,456	49,594	(7,734)	(5,230)	93,133
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	8,186	0	0	8,186
Other comprehensive income (loss)	0	0	0	3,108	0	3,108
Stock dividend	0	5,796	(5,796)	0	0	0
Cash dividends declared, common stock	0	0	(1,328)	0	0	(1,328)
Balance at Jun. 30, 2019	6,279	55,969	55,167	(2,991)	(5,044)	109,380
Balance at Mar. 31, 2019	6,279	50,173	58,168	(4,706)	(5,044)	104,870
Increase (Decrease) in Stockholders' Equity
Net income	0	0	3,520	0	0	3,520
Other comprehensive income (loss)	0	0	0	1,715	0	1,715
Stock dividend	0	5,796	(5,796)	0	0	0
Cash dividends declared, common stock	0	0	(725)	0	0	(725)
Balance at Jun. 30, 2019	$ 6,279	$ 55,969	$ 55,167	$ (2,991)	$ (5,044)	$ 109,380