Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, beginning of period at Dec. 31, 2017	$ 70,532	$ 18,629	$ 9,815	$ 47,535	$ (4,784)	$ (663)
Net income	6,920			6,920
Other comprehensive income (loss)	(1,601)					(1,601)
Cumulative effect adjustment equity securities, related to ASU 2016-01				29		(29)
Cash dividends declared	(1,974)			(1,974)
Balance, end of period at Sep. 30, 2018	73,877	18,629	9,815	52,510	(4,784)	(2,293)
Balance, beginning of period at Jun. 30, 2018	72,578	18,629	9,815	50,736	(4,784)	(1,818)
Net income	2,432			2,432
Other comprehensive income (loss)	(475)					(475)
Cash dividends declared	(658)			(658)
Balance, end of period at Sep. 30, 2018	73,877	18,629	9,815	52,510	(4,784)	(2,293)
Balance, beginning of period at Dec. 31, 2018	76,536	18,629	9,815	54,288	(4,784)	(1,412)
Net income	7,821			7,821
Other comprehensive income (loss)	1,447					1,447
Issuance of 108 treasury shares	4				4
Cash dividends declared	(2,194)			(2,194)
Balance, end of period at Sep. 30, 2019	83,614	18,629	9,815	59,915	(4,780)	35
Balance, beginning of period at Jun. 30, 2019	81,458	18,629	9,815	57,988	(4,780)	(194)
Net income	2,695			2,695
Other comprehensive income (loss)	229					229
Cash dividends declared	(768)			(768)
Balance, end of period at Sep. 30, 2019	$ 83,614	$ 18,629	$ 9,815	$ 59,915	$ (4,780)	$ 35