Note 21 - Fair Value of Financial Instruments - Estimated Fair Value of Company's Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Securities available for sale	$ 215,094	$ 246,019
Reported Value Measurement [Member]
Cash and cash equivalents	11,151	36,259
Securities available for sale	215,094	246,019
Equity securities	382	225
Loans held for sale	1,006	1,314
Loans receivable, net	845,692	777,078
FHLB stock	1,252	1,283
Accrued interest receivable	3,553	3,003
Mortgage servicing assets	2,709	2,986
Deposits	976,793	981,926
FHLB advances and other borrowings	13,200	0
Accrued interest payable	2,399	298
Mortgage loan commitments	7	(28)
Commitments to sell loans	(17)	8
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	11,151	36,259
Securities available for sale	215,094	246,019
Equity securities	382	225
Loans held for sale	1,006	1,314
Loans receivable, net	778,952	724,497
FHLB stock	1,252	1,283
Accrued interest receivable	3,553	3,003
Mortgage servicing assets	6,539	6,344
Deposits	975,963	983,420
FHLB advances and other borrowings	13,200	0
Accrued interest payable	2,399	298
Mortgage loan commitments	7	(28)
Commitments to sell loans	(17)	8
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	11,151
Securities available for sale
Equity securities
Loans held for sale
Loans receivable, net
FHLB stock
Accrued interest receivable
Mortgage servicing assets
Deposits
FHLB advances and other borrowings
Accrued interest payable
Mortgage loan commitments
Commitments to sell loans
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents
Securities available for sale	215,094
Equity securities	382
Loans held for sale	1,006
Loans receivable, net	778,952
FHLB stock	1,252
Accrued interest receivable	3,553
Mortgage servicing assets
Deposits	975,963
FHLB advances and other borrowings	13,200
Accrued interest payable	2,399
Mortgage loan commitments
Commitments to sell loans
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents
Securities available for sale
Equity securities
Loans held for sale
Loans receivable, net
FHLB stock
Accrued interest receivable
Mortgage servicing assets	6,539
Deposits
FHLB advances and other borrowings
Accrued interest payable
Mortgage loan commitments
Commitments to sell loans
Portion at Other than Fair Value Measurement [Member]
Cash and cash equivalents
Securities available for sale
Equity securities
Loans held for sale
Loans receivable, net
FHLB stock
Accrued interest receivable
Deposits
FHLB advances and other borrowings
Accrued interest payable
Mortgage loan commitments	167,447	232,940
Commitments to sell loans	$ 3,078	$ 6,575

Fair value portion of accrued interest payable.

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Fair value portion of accrued interest receivable.

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No definition available.

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The face amount of financial liabilities related to commitments to sell, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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The fair value portion of mortgage loan commitments assets (liabilities).

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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No definition available.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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- Definition

Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

+ References

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-Topic 942
-SubTopic 210
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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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No definition available.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

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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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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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