Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Unearned common stock held by the ESOP	Retained Earnings	Accumulated Other Comprehensive Loss		Total
Balance at Dec. 31, 2018		$ 100		$ 66,189	$ (7,012)	[1]	$ 59,277
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				911			911
Other comprehensive income (loss)					1,096		1,096
Common Stock and proceeds of offering	$ 111	45,754					45,865
Unearned common stock held by ESOP			$ (4,364)				(4,364)
ESOP shares committed to be allocated		9	55				64
Balance at Mar. 31, 2019	111	45,863	(4,309)	67,100	(5,916)		102,849
Balance at Dec. 31, 2018		100		66,189	(7,012)	[1]	59,277
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income							4,223
Other comprehensive income (loss)							3,079
Balance at Sep. 30, 2019	111	45,865	(4,200)	70,412	(3,933)	[1]	108,255
Balance at Mar. 31, 2019	111	45,863	(4,309)	67,100	(5,916)		102,849
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,221			1,221
Other comprehensive income (loss)					1,561		1,561
Common Stock and proceeds of offering		(10)					(10)
ESOP shares committed to be allocated		8	54				62
Balance at Jun. 30, 2019	111	45,861	(4,255)	68,321	(4,355)	[1]	105,683
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				2,091			2,091
Other comprehensive income (loss)					422		422
ESOP shares committed to be allocated		4	55				59
Balance at Sep. 30, 2019	111	45,865	(4,200)	70,412	(3,933)	[1]	108,255
Balance at Dec. 31, 2019	111	45,869	(4,146)	72,152	(4,104)	[1]	109,882
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,075			1,075
Other comprehensive income (loss)					2,885		2,885
ESOP shares committed to be allocated			55				55
Balance at Mar. 31, 2020	111	45,869	(4,091)	73,227	(1,219)		113,897
Balance at Dec. 31, 2019	111	45,869	(4,146)	72,152	(4,104)	[1]	109,882
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income							3,573
Other comprehensive income (loss)							1,545
Balance at Sep. 30, 2020	111	45,895	(3,982)	75,725	(2,559)	[1]	115,190
Balance at Mar. 31, 2020	111	45,869	(4,091)	73,227	(1,219)		113,897
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,348			1,348
Other comprehensive income (loss)					(1,602)		(1,602)
ESOP shares committed to be allocated		(17)	54				37
Balance at Jun. 30, 2020	111	45,852	(4,037)	74,575	(2,821)	[1]	113,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,150			1,150
Other comprehensive income (loss)					262		262
ESOP shares committed to be allocated		(18)	55				37
Share-based compensation expense		61					61
Balance at Sep. 30, 2020	$ 111	$ 45,895	$ (3,982)	$ 75,725	$ (2,559)	[1]	$ 115,190

[1] All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0%.