CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Unearned ESOP Shares
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 loss on investment securities net of tax expense	3,562				3,562
Cash dividends	(2,004)			(2,004)
Dividend reinvestment			88	(88)
Net change in fair market value over 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 loss on investment securities net of tax expense	671				671
Cash dividends	(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)
Beginning Balance at Dec. 31, 2019	181,494	59	95,474	85,059	1,504	(602)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	9,997			9,997
Unrealized holding loss on investment securities net of tax expense	3,276				3,276
Cash dividends	(2,115)			(2,115)
Dividend reinvestment			100	(100)
Net change in fair market value over cost of leveraged ESOP shares released	(37)		(37)
Repurchase of common stock	(27)			(27)
Stock based compensation	262		262
Ending Balance at Sep. 30, 2020	192,850	59	95,799	92,814	4,780	(602)
Beginning Balance at Jun. 30, 2020	189,442	59	95,687	89,781	4,517	(602)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	3,799			3,799
Unrealized holding loss on investment securities net of tax expense	263				263
Cash dividends	(705)			(705)
Dividend reinvestment			34	(34)
Net change in unearned ESOP shares	(21)		(21)
Repurchase of common stock	(27)			(27)
Stock based compensation	99		99
Ending Balance at Sep. 30, 2020	$ 192,850	$ 59	$ 95,799	$ 92,814	$ 4,780	$ (602)