Condensed Statements of Income (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Interest income	$ 4,307,177	$ 4,161,750	$ 4,321,593	$ 4,586,591	$ 4,379,635	$ 4,220,147	$ 4,127,206	$ 4,207,354	$ 17,377,111	$ 16,934,342	$ 18,097,081
Net income	$ 1,539,169	$ 1,726,937	$ 1,668,684	$ 1,810,075	$ 1,735,206	$ 1,703,271	$ 1,501,023	$ 1,521,131	6,744,865	6,460,631	7,318,433
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Interest income									288	759	1,280
Net operating expenses									(256,471)	(255,409)	(221,510)
Dividends received fom bank									3,805,000	4,700,000	4,170,000
Equity in undistributed earnings of subsidiary									3,196,048	2,015,281	3,368,663
Net income									$ 6,744,865	$ 6,460,631	$ 7,318,433