Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2017	16,272,000
Balance at Dec. 31, 2017	$ 51,830	$ 75,700	$ (266)	$ 127,264
Net income		3,241		3,241
Reclassification of accumulated other comprehensive income due to tax rate change		52	(52)
Other comprehensive loss, net of tax			(2,426)	(2,426)
Comprehensive income				815
Dividend declared on common stock		(486)		(486)
Stock compensation grants (in shares)	5,000
Stock issued under employee plans	$ 45			45
Restricted stock granted, net (in shares)	20,000
Restricted stock granted, net
Stock options exercised (in shares)	19,000
Stock options exercised	$ 113			113
Compensation expense associated with stock options	3			3
Compensation expense associated with restricted stock, net of cash paid for shares surrendered for tax-withholding purposes	(32)			(32)
Balance at Mar. 31, 2018	$ 51,959	78,507	(2,744)	127,722
Balance (in shares) at Mar. 31, 2018	16,316,000
Net income		3,618		3,618
Other comprehensive loss, net of tax			(696)	(696)
Comprehensive income				2,922
Dividend declared on common stock		(650)		(650)
Stock options exercised (in shares)	2,000
Stock options exercised	$ 10			10
Compensation expense associated with stock options	2			2
Compensation expense associated with restricted stock, net of cash paid for shares surrendered for tax-withholding purposes	72			72
Balance at Jun. 30, 2018	$ 52,043	81,475	(3,440)	130,078
Balance (in shares) at Jun. 30, 2018	16,318,000
Net income		4,032		4,032
Other comprehensive loss, net of tax			(639)	(639)
Comprehensive income				3,393
Dividend declared on common stock		(650)		(650)
Stock options exercised (in shares)	12,000
Stock options exercised	$ 74			74
Compensation expense associated with stock options	3			3
Compensation expense associated with restricted stock, net of cash paid for shares surrendered for tax-withholding purposes	71			71
Balance at Sep. 30, 2018	$ 52,191	84,857	(4,079)	132,969
Balance (in shares) at Sep. 30, 2018	16,330,000
Net income		4,839		4,839
Other comprehensive loss, net of tax			1,071	1,071
Comprehensive income				5,910
Dividend declared on common stock		(651)		(651)
Stock options exercised (in shares)	4,000
Stock options exercised	$ 19			19
Compensation expense associated with restricted stock, net of cash paid for shares surrendered for tax-withholding purposes	74			74
Balance at Dec. 31, 2018	$ 52,284	89,045	(3,008)	$ 138,321
Balance (in shares) at Dec. 31, 2018	16,334,000			16,333,502
Net income		2,306		$ 2,306
Other comprehensive loss, net of tax			2,514	2,514
Comprehensive income				4,820
Dividend declared on common stock		(725)		(725)
Stock compensation grants (in shares)	6,000
Stock issued under employee plans	$ 58			58
Restricted stock granted, net (in shares)	31,000
Restricted stock granted, net
Stock options exercised (in shares)	8,000
Stock options exercised	$ 40			40
Compensation expense associated with restricted stock, net of cash paid for shares surrendered for tax-withholding purposes	(22)			(22)
Balance at Mar. 31, 2019	$ 71,966	90,626	(494)	$ 162,098
Balance (in shares) at Mar. 31, 2019	18,213,000			18,213,334
Stock issued for Merchants acquisition (in shares)	1,834,000
Stock issued for Merchants acquisition	$ 19,606			$ 19,606