CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Deferred Compensation, Share-based Payments [Member]	AOCI Attributable to Parent [Member]	Total
Balances at December 31, 2019 at Dec. 31, 2018	$ 281	$ 43,770	$ 60,339	$ (711)	$ (220)	$ 103,459
Balances, shares at Dec. 31, 2018	2,806,781
Net income for period			8,126			8,126
Other comprehensive income, net of tax					1,929	1,929
Common stock dividends declared ($0.87 per share)			(2,361)			(2,361)
Stock options exercised		34				34
Forfeiture of stock awards		(31)		31
Forfeiture of stock awards, shares	(710)
Retired Common Stock
Retired common stock, shares	(14)
Stock based compensation-restricted stock awards				393		393
Balances at September 30, 2020 at Sep. 30, 2019	$ 282	44,372	66,104	(887)	1,709	111,580
Balances, shares at Sep. 30, 2019	2,823,212
Issuance of restricted common stock	$ 1	457		(458)
Issuance of restricted common stock, shares	11,530
Stock options exercised, shares	2,025
Issuance of director's restricted stock awards		142		(142)
Issuance of director's restricted stock awards, shares	3,600
Balances at December 31, 2019 at Jun. 30, 2019	$ 282	44,382	63,905	(1,075)	1,454	108,948
Balances, shares at Jun. 30, 2019	2,823,476
Net income for period			2,988			2,988
Other comprehensive income, net of tax					255	255
Common stock dividends declared ($0.87 per share)			(789)			(789)
Stock options exercised
Forfeiture of stock awards		(10)		10
Forfeiture of stock awards, shares	(250)
Retired Common Stock
Retired common stock, shares	(14)
Stock based compensation-restricted stock awards				178		178
Balances at September 30, 2020 at Sep. 30, 2019	$ 282	44,372	66,104	(887)	1,709	111,580
Balances, shares at Sep. 30, 2019	2,823,212
Balances at December 31, 2019 at Dec. 31, 2019	$ 283	44,490	68,320	(795)	1,357	113,655
Balances, shares at Dec. 31, 2019	2,825,912
Net income for period			9,137			9,137
Other comprehensive income, net of tax					1,339	1,339
Common stock dividends declared ($0.87 per share)			(2,462)			(2,462)
Stock options exercised		53				53
Forfeiture of stock awards		(50)		50
Forfeiture of stock awards, shares	(1,200)
Stock based compensation-restricted stock awards		125		393		518
Balances at September 30, 2020 at Sep. 30, 2020	$ 284	45,171	74,995	(906)	2,696	122,240
Balances, shares at Sep. 30, 2020	2,843,292
Issuance of restricted common stock	$ 1	439		(440)
Issuance of restricted common stock, shares	12,275
Stock options exercised, shares	3,105
Issuance of director's restricted stock awards		114		(114)
Issuance of director's restricted stock awards, shares	3,200
Balances at December 31, 2019 at Jun. 30, 2020	$ 284	45,096	71,461	(1,031)	2,634	118,444
Balances, shares at Jun. 30, 2020	2,843,292
Net income for period			4,356			4,356
Other comprehensive income, net of tax					62	62
Common stock dividends declared ($0.87 per share)			(822)			(822)
Forfeiture of stock awards		(21)		21
Forfeiture of stock awards, shares	(500)
Stock based compensation-restricted stock awards		78		122		200
Balances at September 30, 2020 at Sep. 30, 2020	$ 284	45,171	74,995	(906)	2,696	122,240
Balances, shares at Sep. 30, 2020	2,843,292
Issuance of restricted common stock		$ 18		$ (18)
Issuance of restricted common stock, shares	500