Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Total
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	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	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
Balance at Dec. 31, 2019	6,520	55,727	61,590	(3,755)	(5,044)	115,038
Increase (Decrease) in Stockholders' Equity
Net income	0	0	4,150	0	0	4,150
Other comprehensive income	0	0	0	3,151	0	3,151
Purchase of treasury stock	0	0	0	0	(809)	(809)
Stock dividend	0	3,829	(3,829)	0	0	0
Cash dividends declared, common stock	0	0	(1,499)	0	0	(1,499)
Balance at Jun. 30, 2020	6,520	59,556	60,412	(604)	(5,853)	120,031
Balance at Mar. 31, 2020	6,520	55,727	61,708	(1,522)	(5,763)	116,670
Increase (Decrease) in Stockholders' Equity
Net income	0	0	3,282	0	0	3,282
Other comprehensive income	0	0	0	918	0	918
Purchase of treasury stock	0	0	0	0	(90)	(90)
Stock dividend	0	3,829	(3,829)	0	0	0
Cash dividends declared, common stock	0	0	(749)	0	0	(749)
Balance at Jun. 30, 2020	$ 6,520	$ 59,556	$ 60,412	$ (604)	$ (5,853)	$ 120,031