Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2017	$ 5,362	$ 47,895	$ 72,694	$ (878)	$ (15,712)	$ 109,361
Net income			8,088			8,088
Other comprehensive income (loss), net				(1,981)		(1,981)
Common stock issued through dividend reinvestment	24	1,025				1,049
Cash dividends			(2,973)			(2,973)
Stranded tax ASU 2018-02			173	(173)
Balance at Sep. 30, 2018	5,393	49,208	77,982	(3,032)	(15,712)	113,839
Common stock issued to ESOP	7	288				295
Balance at Jun. 30, 2018	5,387	48,933	77,230	(2,610)	(15,712)	113,228
Net income			1,746			1,746
Other comprehensive income (loss), net				(422)		(422)
Common stock issued through dividend reinvestment	6	275				281
Cash dividends			(994)			(994)
Stranded tax ASU 2018-02
Balance at Sep. 30, 2018	5,393	49,208	77,982	(3,032)	(15,712)	113,839
Balance at Dec. 31, 2018	5,400	49,477	80,844	(2,135)	(15,712)	117,874
Net income			6,409			6,409
Other comprehensive income (loss), net				2,528		2,528
Common stock issued through dividend reinvestment	29	1,029				1,058
Cash dividends			(2,996)			(2,996)
Balance at Sep. 30, 2019	5,437	50,826	84,257	393	(15,712)	125,201
Common stock issued to ESOP	8	320				328
Balance at Jun. 30, 2019	5,427	50,492	83,121	592	(15,712)	123,920
Net income			2,137			2,137
Other comprehensive income (loss), net				(199)		(199)
Common stock issued through dividend reinvestment	10	334				344
Cash dividends			(1,001)			(1,001)
Balance at Sep. 30, 2019	$ 5,437	$ 50,826	$ 84,257	$ 393	$ (15,712)	$ 125,201