CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands		Total	Common Stock $1 Par	Surplus	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Beginning balance at Dec. 31, 2018	[1]	$ 147,284	$ 9,687	$ 109,788	$ 34,947	$ (7,138)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		10,192			10,192
Other comprehensive income		8,795				8,795
Cash dividends on common stock	[1]	(4,227)			(4,227)
Ending balance at Sep. 30, 2019		162,044	9,687	109,788	40,912	1,657
Beginning balance at Dec. 31, 2019		166,035	9,741	110,836	43,283	2,175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		14,191			14,191
Other comprehensive income		9,261				9,261
Cash dividends on common stock		(4,676)			(4,676)
Ending balance at Sep. 30, 2020		$ 184,811	$ 9,741	$ 110,836	$ 52,798	$ 11,436

[1] All share and per share amounts have been restated to reflect the ten percent stock dividend paid December 16, 2019 to shareholders of record as of December 9, 2019.