Earnings Per Common Share - Stockholders' equity and are excluded from weighted-average (Details)			3 Months Ended		9 Months Ended
		Jan. 22, 2020	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares
Earnings Per Common Share
Net Income | $			$ 938,533	$ 146,142	$ 1,436,478	$ 458,197
Less allocation of earnings to participating securities | $			3,990	1,118	8,787	4,473
Net income allocated to common shareholders | $			$ 934,543	$ 145,024	$ 1,427,691	$ 453,724
Shares outstanding for basic earnings per share:
Shares issued			2,965,593	2,937,127	2,954,316	2,937,918
Less: Average unearned ESOP shares			74,026	77,146	71,455	79,902
Weighted-average shares outstanding - basic	[1]		2,891,567	2,859,981	2,882,861	2,858,016
Basic earnings per common share | $ / shares			$ 0.32	$ 0.05	$ 0.50	$ 0.16
Effect of dilutive securities:
Weighted-average shares outstanding - basic	[1]		2,891,567	2,859,981	2,882,861	2,858,016
Stock options			29,824	47,106	31,658	39,326
Weighted-average shares outstanding - diluted	[1]		2,921,391	2,907,087	2,914,519	2,897,342
Diluted earnings per share | $ / shares			$ 0.32	$ 0.05	$ 0.49	$ 0.16
Stock Exchange Ratio		1.6351

[1] Share amounts related to periods prior to the January 22, 2020 closing of the conversion offering have been restated to give retroactive recognition to the 1.6351 exchange ratio applied in the conversion offering. (see Note 1).