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Note 8 - Fair Value - Nonrecurring Measurements Valuation Techniques (Details)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Commercial Real Estate Portfolio Segment [Member] | Valuation, Income Approach [Member]
Loans, fair value	$ 20,815,000	$ 7,286
Loans, fair value	$ 20,815,000	$ 7,286
Commercial Real Estate Portfolio Segment [Member] | Valuation, Income Approach [Member] | Minimum [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	(0.5418)	(0.5603)
Commercial Real Estate Portfolio Segment [Member] | Valuation, Income Approach [Member] | Maximum [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	0.6463	0.6902
Commercial Real Estate Portfolio Segment [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	(0.4216)	(0.4071)
Commercial Portfolio Segment [Member] | Valuation, Market Approach [Member]
Loans, fair value	$ 2,165,000
Loans, fair value	$ 2,165,000
Commercial Portfolio Segment [Member] | Valuation, Market Approach [Member] | Measurement Input, Price Volatility [Member]
Loans, measurement input	0.1009
Commercial Portfolio Segment [Member] | Valuation Technique, Consensus Pricing Model [Member]
Loans, fair value		$ 2,418
Loans, fair value		$ 2,418
Commercial Portfolio Segment [Member] | Valuation Technique, Consensus Pricing Model [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input		6.67
Residential Portfolio Segment [Member] | Valuation, Market Approach [Member]
Loans, fair value	$ 760,000	$ 1,132
Loans, fair value	$ 760,000	$ 1,132
Residential Portfolio Segment [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	(0.194)	(0.0891)
Residential Portfolio Segment [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	(0.2495)	(0.0622)
Residential Portfolio Segment [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	(0.1022)	(0.0716)
Consumer Portfolio Segment [Member] | Valuation, Market Approach [Member]
Loans, fair value	$ 35,000
Loans, fair value	$ 35,000
Consumer Portfolio Segment [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	(0.0059)
Consumer Portfolio Segment [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	0.0059
Consumer Portfolio Segment [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Measurement Input, Cap Rate [Member]
Loans, measurement input	0

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- Definition

Value of input used to measure loan receivable.

+ References

No definition available.

+ Details

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-SubTopic 10
-Topic 825
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482881/825-10-55-10

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482881/825-10-55-12

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