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Note 5 - Mortgage Servicing Rights - Valuation Assumptions (Details) - Mortgage Servicing Rights [Member]	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Discount rate	9.90%	9.40%
Conditional prepayment rate	8.90%	7.20%
Weighted average life in years (Year)	7 years 10 months 24 days	8 years 4 months 24 days

X

- Definition

Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

+ References

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-Topic 860
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-Publisher FASB
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- Definition

Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

+ References

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-Section 50
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- Definition

Weighted average life of financial assets and financial liabilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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