Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic and Diluted
Net income	$ 2,902	$ 2,059	$ 6,995	$ 5,313
Less allocated earnings on non-vested restricted stock	(114)	(52)	(211)	(119)
Less allocated dividends on non-vested restricted stock	(49)	(36)	(173)	(105)
Net income allocated to common stockholders	$ 2,739	$ 1,971	$ 6,612	$ 5,089
Weighted Average Number of Shares Outstanding, Basic	5,478,496	5,467,745	5,476,359	5,465,854
Weighted Average Number of Shares Outstanding, Diluted (Shares)	5,478,496	5,467,745	5,476,359	5,465,854
Basic	$ 0.50	$ 0.36	$ 1.21	$ 0.93
Diluted	$ 0.50	$ 0.36	$ 1.21	$ 0.93