Note L - Financial Instruments with Off-balance-sheet Risk (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable, Commitments, Fixed Rates	$ 15,082,587	$ 15,539,762
Irrevocable Letters of Credit [Member]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	89,097	235,141
Commitments to Extend Credit [Member]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 28,596,286	$ 31,885,422