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	9,245	0	9,245
Common stock issued in acquisition	[1]	438	11,268	(1,056)	0	10,650
Other comprehensive income (loss)		0	0	0	2,305	2,305
Cash dividends on common stock	[1]	0	0	(3,780)	0	(3,780)
Balance at Sep. 30, 2017		8,807	92,268	43,388	(1,694)	142,769
Balance at Dec. 31, 2017		8,807	92,268	44,464	(1,556)	143,983
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of stranded tax effects in accumulated other comprehensive income	[2]	0	0	306	0	306
Net income		0	0	11,595	0	11,595
Other comprehensive income (loss)		0	0	0	(9,313)	(9,313)
Cash dividends on common stock		0	0	(4,227)	0	(4,227)
Balance at Sep. 30, 2018		$ 8,807	$ 92,268	$ 52,138	$ (10,869)	$ 142,344

[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.

[2] See Note 2 - Recent Accounting Pronouncements