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Note 4 - Fair Value Measurements - Fair Value Quantitative Information (Details) - Fair Value, Nonrecurring [Member] $ in Thousands	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Collateral dependent loans, fair value	$ 2,530	$ 385
Other real estate owned	204
Fair Value, Inputs, Level 3 [Member]
Collateral dependent loans, fair value	2,530	385
Other real estate owned	204
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member]
Other real estate owned	$ 204
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Measurement Input Valuation Adjustments [Member]
Other real estate owned	0.06
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Measurement Input Valuation Adjustments [Member]
Other real estate owned	0.08
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member]
Collateral dependent loans, fair value	$ 2,530	$ 385
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Measurement Input Valuation Adjustments [Member]
Collateral dependent loans	0	0
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member]
Collateral dependent loans	0.25
Impaired Loan [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Measurement Input Valuation Adjustments [Member]
Collateral dependent loans		0.25

X

- Definition

The measurement input of loans held-for-investment.

+ References

No definition available.

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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.

+ References

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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.

+ References

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- Definition

Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business.

+ References

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