Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in Accounting policy for equity securities			$ (1)	$ 1		$ 0
Balance at Dec. 31, 2017	$ 3,870	$ 51,108	89,982	(3,398)	$ (12,551)	129,011
Balance (in shares) at Dec. 31, 2017	3,869,939
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			4,247			4,247
Net other comprehensive income (loss)				(1,580)		(1,580)
Purchase of treasury stock					(331)	(331)
Restricted stock, executive and Board of Director awards		0			13	13
Restricted stock vesting		5				5
Cash dividends			(1,515)			(1,515)
Balance at Mar. 31, 2018	$ 3,870	51,113	92,713	(4,977)	(12,869)	129,850
Balance (in shares) at Mar. 31, 2018	3,869,939
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in Accounting policy for equity securities				1
Balance at Dec. 31, 2018	$ 3,904	53,099	99,727	(3,921)	(13,580)	139,229
Balance (in shares) at Dec. 31, 2018	3,904,212
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			4,405			4,405
Net other comprehensive income (loss)				1,096		1,096
Purchase of treasury stock					(330)	(330)
Restricted stock vesting		3				3
Cash dividends			(1,558)			(1,558)
Balance at Mar. 31, 2019	$ 3,904	$ 53,102	$ 102,574	$ (2,825)	$ (13,910)	$ 142,845
Balance (in shares) at Mar. 31, 2019	3,904,212