Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid -in Capital	Unearned ESOP Shares	Retained Earnings	Accumulated Other Comprehensive Income, net of tax
Beginning balance (in shares) at Dec. 31, 2018		2,544,059
Beginning balance at Dec. 31, 2018	$ 71,627	$ 25	$ 25,663	$ (340)	$ 46,165	$ 114
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,444				1,444
Other comprehensive loss, net of tax	42					42
Share-based compensation	39		39
Restricted stock awards issued (in shares)		15,925
Restricted stock awards issued	0
Cash dividends paid on common stock	(357)				(357)
Common stock repurchased (in shares)		(1,488)
Common stock surrendered	0
Common stock options exercised (in shares)		5,332
Common stock options exercised	32		32
Allocation of ESOP shares	96		68	28
Ending balance (in shares) at Mar. 31, 2019		2,563,828
Ending balance at Mar. 31, 2019	$ 72,923	$ 25	25,802	(312)	47,252	156
Beginning balance (in shares) at Dec. 31, 2019	2,567,389	2,567,389
Beginning balance at Dec. 31, 2019	$ 77,726	$ 25	26,343	(227)	51,410	175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	981				981
Other comprehensive loss, net of tax	(19)					(19)
Share-based compensation	185		185
Restricted stock awards issued (in shares)		13,600
Restricted stock awards issued	0
Cash dividends paid on common stock	(903)				(903)
Restricted shares forfeited (in shares)		(180)
Restricted shares forfeited	0
Common stock options exercised (in shares)		10,685
Common stock options exercised	182		182
Allocation of ESOP shares	$ 95		66	29
Ending balance (in shares) at Mar. 31, 2020	2,591,494	2,591,494
Ending balance at Mar. 31, 2020	$ 78,247	$ 25	$ 26,776	$ (198)	$ 51,488	$ 156