Note 13 - Fair Value of Financial Instruments - Schedule of Fair Value by Balance Sheet Grouping (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Available For Sale ("AFS")	$ 531,421,573	$ 550,148,284
Reported Value Measurement [Member]
Cash and Cash Equivalents	84,224,000	28,502,000
Certificates of Deposits with Other Banks	1,100,000	1,100,000
Available For Sale ("AFS")	531,422	550,148
Investments HTM	174,136	167,438
Loans Receivable, Net	596,976,000	549,004,000
FHLB Stock	922,000	651,000
Land Held for Sale	938,000	1,097,000
Checking, Savings & Money Market Accounts	953,818,000	968,054,000
Certificates of Deposits	232,235,000	142,031,000
Borrowings from FRB	69,200,000	44,080,000
Other Borrowed Money	19,043,000	27,588,000
Subordinated Debentures	26,500,000	26,500,000
Junior Subordinated Debentures	5,155,000	5,155,000
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and Cash Equivalents	84,224,000	28,502,000
Certificates of Deposits with Other Banks	0	0
Available For Sale ("AFS")	0	0
Investments HTM	0	0
Loans Receivable, Net	0	0
FHLB Stock	922,000	651,000
Land Held for Sale	0	0
Checking, Savings & Money Market Accounts	953,818,000	968,054,000
Certificates of Deposits	0	0
Borrowings from FRB	68,729,000	44,071,000
Other Borrowed Money	19,043,000	27,588,000
Subordinated Debentures	0	0
Junior Subordinated Debentures	0	0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash and Cash Equivalents	0	0
Certificates of Deposits with Other Banks	1,100,000	1,100,000
Available For Sale ("AFS")	531,422	550,148
Investments HTM	166,639	161,464
Loans Receivable, Net	0	0
FHLB Stock	0	0
Land Held for Sale	0	0
Checking, Savings & Money Market Accounts	0	0
Certificates of Deposits	229,658,000	138,382,000
Borrowings from FRB	0	0
Other Borrowed Money	0	0
Subordinated Debentures	22,791,000	24,435,000
Junior Subordinated Debentures	5,155,000	5,155,000
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash and Cash Equivalents	0	0
Certificates of Deposits with Other Banks	0	0
Available For Sale ("AFS")	0	0
Investments HTM	0	0
Loans Receivable, Net	574,770,000	528,174,000
FHLB Stock	0	0
Land Held for Sale	938,000	1,097,000
Checking, Savings & Money Market Accounts	0	0
Certificates of Deposits	0	0
Borrowings from FRB	0	0
Other Borrowed Money	0	0
Subordinated Debentures	0	0
Junior Subordinated Debentures	$ 0	$ 0

Represents fair value disclosure of certificates of deposits.

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Assets comprising of certificates of deposits with other banks, evaluated for fair value disclosure.

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Liabilities comprising of checking, savings and money market accounts, evaluated for fair value disclosure.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Represents fair value disclosure of land held for sale.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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Fair value of obligations measured on a recurring basis.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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- Definition

Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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