Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Unearned Employee Stock Ownership Plan Shares [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2019	$ 91	$ 40,365	$ 107,547	$ 46	$ (1,643)	$ (53,758)	$ 92,648
Net income			7,177				7,177
Other comprehensive income (loss), net of tax				1,297			1,297
Stock repurchases						(360)	(360)
Amortization of restricted stock awards		184					184
Earned employee stock ownership plan shares		112			145		257
Restricted stock awards		(268)				268	0
Stock awards withheld for tax withholding						(60)	(60)
Balance at Sep. 30, 2020	91	40,393	114,724	1,343	(1,498)	(53,910)	101,143
Balance at Jun. 30, 2020	91	40,312	111,623	1,545	(1,546)	(53,910)	98,115
Net income			3,101				3,101
Other comprehensive income (loss), net of tax				(202)			(202)
Amortization of restricted stock awards		54					54
Earned employee stock ownership plan shares		27			48		75
Balance at Sep. 30, 2020	91	40,393	114,724	1,343	(1,498)	(53,910)	101,143
Balance at Dec. 31, 2020	91	40,480	117,849	1,282	(1,450)	(55,000)	103,252
Net income			11,565				11,565
Other comprehensive income (loss), net of tax				(1,508)			(1,508)
Stock repurchases						(3,866)	(3,866)
Amortization of restricted stock awards		182					182
Earned employee stock ownership plan shares		170			146		316
Restricted stock awards		(222)				222	0
Stock awards withheld for tax withholding						(7)	(7)
Balance at Sep. 30, 2021	91	40,610	129,414	(226)	(1,304)	(58,651)	109,934
Balance at Jun. 30, 2021	91	40,484	125,795	462	(1,353)	(57,521)	107,958
Net income			3,619				3,619
Other comprehensive income (loss), net of tax				(688)			(688)
Stock repurchases						(1,130)	(1,130)
Amortization of restricted stock awards		61					61
Earned employee stock ownership plan shares		65			49		114
Balance at Sep. 30, 2021	$ 91	$ 40,610	$ 129,414	$ (226)	$ (1,304)	$ (58,651)	$ 109,934