Note 3 - Loans Receivable (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount)	$ 22,100,000		$ 21,500,000
Financing Receivable, Accrued Interest, after Allowance for Credit Loss	5,300,000		5,000,000
Financing Receivable, Nonaccrual, Interest Income	133,000	$ 8,000
Financing Receivable, Individually Evaluated for Credit Loss	37,900,000		25,900,000
Financing Receivable, Allowance for Credit Loss, Individually Evaluated	243,000		151,000
Other Real Estate	1,400,000		1,400,000
Commercial Portfolio Segment [Member]
Financing Receivable, Individually Evaluated for Credit Loss, Still Accruing	12,800,000
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable, Individually Evaluated for Credit Loss, Still Accruing	4,500,000		4,500,000
Valuation Technique, Discounted Cash Flow [Member]
Financing Receivable, Individually Evaluated for Credit Loss	386,000		303,000
Valuation Technique, Underlying Value of Collateral [Member]
Financing Receivable, Individually Evaluated for Credit Loss	$ 37,500,000		$ 25,600,000

The amount of financing receivable individually evaluated for credit loss that is still accruing.

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- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

+ References

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- Definition

Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

+ References

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- Definition

Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

+ References

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

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- Definition

Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

+ References

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- Definition

Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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