Note 21 - 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	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Commercial Portfolio Segment [Member]
Collateral dependent loans, fair value	$ 726	$ 657
Commercial Real Estate Portfolio Segment [Member]
Collateral dependent loans, fair value	2,913	7,005
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member]
Collateral dependent loans, fair value	726	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	$ 726	$ 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] | 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 Portfolio Segment [Member] | Valuation, Market Approach [Member] | Average Transfer Price as Price to Unpaid Principal Balance [Member] | Minimum [Member]
Collateral dependent loans, rate	(0.10)	0.001
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member]
Collateral dependent loans, fair value	$ 2,913	$ 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	$ 2,913	$ 7,005
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	(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	(0.143)	0
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	(0.40)	(0.103)