The differences between actual income tax expense and the amounts computed by applying the U.S. federal income tax rate of 21% to pretax income from continuing operations for the periods indicated are reconciled in the table below. (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
Income Tax Disclosure [Abstract]
Computed “expected” tax expense									$ 1,851,433	$ 1,769,525	$ 1,993,679
Increase (reduction) in income taxes resulting from:
Amortization of credit and gain											1,685
Stock based compensation									21,637	19,527	16,391
Valuation allowance									7,658	8,083	7,123
Other									7,477	7,259	6,233
State income tax, net of federal benefit									248,887	238,729	268,000
Tax exempt interest income									(65,589)	(77,444)	(117,837)
Total income tax expense	$ 464,814	$ 525,710	$ 515,264	$ 565,715	$ 528,834	$ 519,930	$ 459,582	$ 457,333	$ 2,071,503	$ 1,965,679	$ 2,175,274