Note 4 - Loans and Allowance for Credit Losses (Details Textual) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Financing Receivable, Nonaccrual, Interest Income	$ 0	$ 0	$ 0	$ 0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	4,233	4,081	4,233	$ 4,081	$ 4,260	$ 4,284
Financing Receivable, Modifications, Number of Contracts				0
Financing Receivable, Accrued Interest, after Allowance for Credit Loss	1,900		1,900		1,900
Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	$ 300		300		360
Nonperforming Financial Instruments [Member]
Financing Receivable, Nonaccrual, Interest Income			$ 21		$ 25
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Number of Loans, Nonaccrual Status	2		2		3
Financing Receivable, Excluding Accrued Interest, Nonaccrual	$ 577,000		$ 577,000		$ 2,400
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	$ 2,946	$ 2,550	$ 2,946	$ 2,550	$ 2,481	$ 2,448

Number of financing receivables that have been modified by troubled debt restructurings.

No definition available.

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- Definition

Represents the number of loans in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3A

+ Details

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

+ Details

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

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Period Type:	duration

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- Details

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- Details

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