CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Unearned ESOP Shares [Member]
Beginning Balance at Dec. 31, 2017	$ 109,957	$ 46	$ 48,209	$ 63,648	$ (1,191)	$ (755)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	7,414			7,414
Unrealized holding gain (loss) on investment securities net of tax	(1,469)				(1,469)
Reclassification due to accounting standard ASU2018-01				(27)	27
Cash dividend per common share	(1,623)			(1,623)
Dividend reinvestment			50	(50)
Net change in fair market value over cost of leveraged ESOP shares released	29		29
Shares issued for County First Merger	35,619	10	35,609
Net change in unearned ESOP shares	(61)					(61)
Repurchase of common stock	(67)			(67)
Stock based compensation	349		349
Ending Balance at Sep. 30, 2018	150,148	56	84,246	69,295	(2,633)	(816)
Beginning Balance at Jun. 30, 2018	147,246	56	84,106	66,021	(2,182)	(755)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	3,858			3,858
Unrealized holding gain (loss) on investment securities net of tax	(478)				(478)
Reclassification due to accounting standard ASU2018-01				(27)	27
Cash dividend per common share	(537)			(537)
Dividend reinvestment			20	(20)
Net change in fair market value below cost of leveraged ESOP shares released	(7)		(7)
Net change in unearned ESOP shares	(61)					(61)
Stock based compensation	113		113
Ending Balance at Sep. 30, 2018	150,148	56	84,246	69,295	(2,633)	(816)
Beginning Balance at Dec. 31, 2018	154,482	56	84,397	72,594	(1,847)	(718)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	11,197			11,197
Unrealized holding gain (loss) on investment securities net of tax	3,562				3,562
Cash dividend per common share	(2,004)			(2,004)
Dividend reinvestment			88	(88)
Net change in fair market value below cost of leveraged ESOP shares released	(4)		(4)
Net change in unearned ESOP shares	(39)					(39)
Repurchase of common stock	(17)			(17)
Stock based compensation	232		232
Ending Balance at Sep. 30, 2019	167,409	56	84,713	81,682	1,715	(757)
Beginning Balance at Jun. 30, 2019	163,645	56	84,613	78,689	1,044	(757)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	3,693			3,693
Unrealized holding gain (loss) on investment securities net of tax	671				671
Cash dividend per common share	(663)			(663)
Dividend reinvestment			37	(37)
Stock based compensation	63		63
Ending Balance at Sep. 30, 2019	$ 167,409	$ 56	$ 84,713	$ 81,682	$ 1,715	$ (757)