CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2018	$ 5,400	$ 49,477	$ 80,844	$ (2,135)	$ (15,712)	$ 117,874
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	6,409	0	0	6,409
Other comprehensive income (loss), net	0	0	0	2,528	0	2,528
Common stock issued to ESOP	8	320	0	0	0	328
Common stock issued through dividend reinvestment	29	1,029	0	0	0	1,058
Cash dividends	0	0	(2,996)	0	0	(2,996)
Balance at Sep. 30, 2019	5,437	50,826	84,257	393	(15,712)	125,201
Balance at Jun. 30, 2019	5,427	50,492	83,121	592	(15,712)	123,920
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	2,137	0	0	2,137
Other comprehensive income (loss), net	0	0	0	(199)	0	(199)
Common stock issued through dividend reinvestment	10	334	0	0	0	344
Cash dividends	0	0	(1,001)			(1,001)
Balance at Sep. 30, 2019	5,437	50,826	84,257	393	(15,712)	125,201
Balance at Dec. 31, 2019	5,447	51,165	86,751	528	(15,712)	128,179
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	5,559	0	0	5,559
Other comprehensive income (loss), net	0	0	0	2,176	0	2,176
Cash dividends	0	0	(3,016)	0	0	(3,016)
Balance at Sep. 30, 2020	5,447	51,165	89,294	2,704	(15,712)	132,898
Balance at Jun. 30, 2020	5,447	51,165	88,006	2,915	(15,712)	131,821
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	2,294	0	0	2,294
Other comprehensive income (loss), net	0	0	0	(211)	0	(211)
Cash dividends	0	0	(1,006)	0	0	(1,006)
Balance at Sep. 30, 2020	$ 5,447	$ 51,165	$ 89,294	$ 2,704	$ (15,712)	$ 132,898