CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Unearned ESOP Shares
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	3,276				3,276
Cash dividends	(2,115)			(2,115)
Dividend reinvestment			100	(100)
Net change in fair market value below cost of leveraged ESOP shares released	(37)		(37)
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	263				263
Cash dividends	(705)			(705)
Dividend reinvestment	0		34	(34)
Net change in fair market value below cost of leveraged ESOP shares released	(21)		(21)
Stock based compensation	99		99
Ending Balance at Sep. 30, 2020	192,850	59	95,799	92,814	4,780	(602)
Beginning Balance at Dec. 31, 2020	198,013	59	95,965	97,944	4,504	(459)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	19,135			19,135
Unrealized holding loss on investment securities net of tax	(4,513)				(4,513)
Cash dividends	(2,355)			(2,355)
Dividend reinvestment			125	(125)
Net change in fair market value below cost of leveraged ESOP shares released	(2)		(2)
Repurchase of common stock	(6,711)	(2)		(6,709)
Stock based compensation	561		561
Ending Balance at Sep. 30, 2021	204,128	57	96,649	107,890	(9)	(459)
Beginning Balance at Jun. 30, 2021	203,962	58	96,411	104,889	3,063	(459)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	6,404			6,404
Unrealized holding loss on investment securities net of tax	(3,072)				(3,072)
Cash dividends	(812)			(812)
Dividend reinvestment	0		45	(45)
Net change in fair market value below cost of leveraged ESOP shares released	2		2
Repurchase of common stock	(2,547)	(1)		(2,546)
Stock based compensation	191		191
Ending Balance at Sep. 30, 2021	$ 204,128	$ 57	$ 96,649	$ 107,890	$ (9)	$ (459)