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Note 7 - Fair Value Measurements and Fair Value of Financial Instruments - Significant Unobservable Inputs for Assets Measured on Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Commercial Portfolio Segment [Member]
Collateral dependent loans, fair value	$ 741	$ 657
Commercial Real Estate Portfolio Segment [Member]
Collateral dependent loans, fair value	23,136	7,005
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member]
Collateral dependent loans, fair value	741	657
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Valuation, Market Approach [Member] | Average Transfer Price as Price to Unpaid Principal Balance [Member]
Collateral dependent loans, fair value	$ 741	$ 657
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Valuation, Market Approach [Member] | Average Transfer Price as Price to Unpaid Principal Balance [Member] | Minimum [Member]
Collateral dependent loans, rate	(0.095)	0.001
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Valuation, Market Approach [Member] | Average Transfer Price as Price to Unpaid Principal Balance [Member] | Maximum [Member]
Collateral dependent loans, rate	0.05	(0.075)
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Valuation, Market Approach [Member] | Average Transfer Price as Price to Unpaid Principal Balance [Member] | Weighted Average [Member]
Collateral dependent loans, rate	(0.043)	0.25
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member]
Collateral dependent loans, fair value	$ 23,136	$ 7,005
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member]
Collateral dependent loans, fair value	$ 23,136	$ 7,005
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member]
Collateral dependent loans, rate	(0.069)	(0.103)
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member]
Collateral dependent loans, rate	0.048	(0.15)
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member]
Collateral dependent loans, rate	(0.002)	0

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- Definition

Fair value portion of impaired financing receivable.

+ References

No definition available.

+ Details

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- Definition

Value of input used to measure impaired loan.

+ References

No definition available.

+ Details

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