CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands		Common Stock $1 Par [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Total
Balance at Dec. 31, 2016	[1]	$ 8,369	$ 81,000	$ 38,979	$ (3,999)	$ 124,349
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		0	0	6,183	0	6,183
Common stock issued in acquisition	[1]	438	11,268	(1,056)	0	10,650
Other comprehensive income (loss)		0	0	0	1,588	1,588
Cash dividends on common stock	[1]	0	0	(2,498)	0	(2,498)
Balance at Jun. 30, 2017		8,807	92,268	41,608	(2,411)	140,272
Balance at Dec. 31, 2017		8,807	92,268	44,464	(1,556)	143,983
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		0	0	8,198	0	8,198
Other comprehensive income (loss)		0	0	0	(8,164)	(8,164)
Cash dividends on common stock		0	0	(2,818)	0	(2,818)
Balance at Jun. 30, 2018		$ 8,807	$ 92,268	$ 49,844	$ (9,720)	$ 141,199

[1] All share and per share amounts reflect the ten percent stock dividend paid December 14, 2017 to shareholders of record as of December 8, 2017.