Note 10 - Fair Value of Financial Instruments - Estimated Fair Value and Carrying Amounts of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	$ 26,928	$ 31,559
FHLB stock	7,000	7,778
FRB stock	4,131	4,131
Loans receivable, gross	1,529,008	1,466,511
Mortgage servicing rights	20,318	20,370
Non-maturing interest-bearing deposits	861,302	799,142
Time certificates of deposit	457,784	461,254
FHLB advances and other borrowings	119,491	141,057
Other long-term debt	59,031	58,024
Reported Value Measurement [Member]
Cash and cash equivalents	26,928	31,559
FHLB stock	7,000	7,778
FRB stock	4,131	4,131
Loans receivable, gross	1,569,662	1,520,646
Mortgage servicing rights	15,120	15,376
Non-maturing interest-bearing deposits	861,302	799,142
Time certificates of deposit	459,299	462,875
FHLB advances and other borrowings	119,407	140,930
Other long-term debt	60,155	60,155
Fair Value, Inputs, Level 1 [Member] \| Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	26,928	31,559
FHLB stock	0	0
FRB stock	0	0
Loans receivable, gross	0	0
Mortgage servicing rights	0	0
Non-maturing interest-bearing deposits	0	0
Time certificates of deposit	0	0
FHLB advances and other borrowings	0	0
Other long-term debt	0	0
Fair Value, Inputs, Level 2 [Member] \| Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	0	0
FHLB stock	7,000	7,778
FRB stock	4,131	4,131
Loans receivable, gross	0	0
Mortgage servicing rights	0	0
Non-maturing interest-bearing deposits	861,302	799,142
Time certificates of deposit	0	0
FHLB advances and other borrowings	0	0
Other long-term debt	0	0
Fair Value, Inputs, Level 3 [Member] \| Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	0	0
FHLB stock	0	0
FRB stock	0	0
Loans receivable, gross	1,529,008	1,466,511
Mortgage servicing rights	20,318	20,370
Non-maturing interest-bearing deposits	0	0
Time certificates of deposit	457,784	461,254
FHLB advances and other borrowings	119,491	141,057
Other long-term debt	$ 59,031	$ 58,024

The fair value portion of borrowing from the Federal Home Loan Bank and other borrowings.

No definition available.

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- Definition

The fair value portion of interest bearing deposit liabilities held by the entity.

+ References

No definition available.

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- Definition

Fair value portion of investments in Federal Reserve Bank stock.

+ References

No definition available.

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The fair value portion of time certificates of deposit held by the entity.

+ References

No definition available.

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- Definition

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.

+ References

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

+ References

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- Definition

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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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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- Definition

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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