Note 23 - Condensed Parent Company Statements - Condensed Balance Sheets (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Cash	$ 130,646,039	$ 148,422,908
Deferred and receivable income taxes	2,768,456	3,675,694
Assets, Total	1,172,910,304	1,146,252,939
Common stock	691,950	691,950
Additional paid-in capital	51,536,205	51,337,219
Retained earnings, substantially restricted	85,081,199	77,073,707
Accumulated other comprehensive loss	(50,427)	(53,378)
Treasury stock	(39,794,796)	(40,081,132)
Liabilities and Equity, Total	1,172,910,304	1,146,252,939
Subordinated Debentures Issued to Capital Trusts [Member]
Subordinated Debt, Ending Balance	10,310,000	15,465,000
Subordinated Notes, Net [Member]
Subordinated Debt, Ending Balance	19,609,576	19,564,131
Parent Company [Member]
Cash	3,774,700	7,940,245
Investment in subsidiary	123,442,257	115,472,127
Investment in Capital Trusts	310,000	465,000
Prepaid expenses and other assets	545,935	218,411
Deferred and receivable income taxes	1,350,782	2,197,483
Assets, Total	129,423,674	126,293,266
Accrued expenses and other liabilities	2,033,067	2,288,869
Due to subsidiary	6,900	6,900
Common stock	691,950	691,950
Additional paid-in capital	51,536,205	51,337,219
Retained earnings, substantially restricted	85,081,199	77,073,707
Accumulated other comprehensive loss	(50,427)	(53,378)
Treasury stock	(39,794,796)	(40,081,132)
Liabilities and Equity, Total	129,423,674	126,293,266
Parent Company [Member] | Subordinated Debentures Issued to Capital Trusts [Member]
Subordinated Debt, Ending Balance	10,310,000	15,465,000
Parent Company [Member] | Subordinated Notes, Net [Member]
Subordinated Debt, Ending Balance	$ 19,609,576	$ 19,564,131