Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2017		$ 98,570	$ 2,258	$ 18,691	$ 84,183	$ (4,086)	$ (2,476)
Balance (in shares) at Dec. 31, 2017			3,448,108
Net income		2,935			2,935
Other comprehensive income (loss), net of tax		(3,987)				(3,987)
Cash dividends declared		(1,105)			(1,105)
Equity securities fair value reclassification	[1]				(254)	254
ASU 2018-02 stranded tax reclassification	[2]				805	(805)
Stock issued for options exercised		$ 69	$ 4	65
Stock issued for options exercised (in shares)		9,750	5,908
Stock-based compensation expense		$ 22		22
Balance at Mar. 31, 2018		96,504	$ 2,262	18,778	86,564	(8,624)	(2,476)
Balance (in shares) at Mar. 31, 2018			3,454,016
Balance at Dec. 31, 2018		$ 104,348	$ 2,280	20,041	91,635	(7,132)	(2,476)
Balance (in shares) at Dec. 31, 2018		3,484,080	3,484,080
Net income		$ 3,379			3,379
Other comprehensive income (loss), net of tax		3,500				3,500
Cash dividends declared		(1,151)			(1,151)
Stock issued in connection with dividend reinvestment and stock purchase plan		235	$ 4	231
Stock issued in connection with dividend reinvestment and stock purchase plan (in shares)			6,646
Stock issued for options exercised		$ 22	$ 2	20
Stock issued for options exercised (in shares)		8,275	3,209
Stock-based compensation expense		$ 27		27
Balance at Mar. 31, 2019		$ 110,360	$ 2,286	$ 20,319	$ 93,863	$ (3,632)	$ (2,476)
Balance (in shares) at Mar. 31, 2019		3,493,935	3,493,935

[1] Refer to Note 1, ASU 2016-01

[2] Refer to Note 1, ASU 2018-02