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Note 6 - 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, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | ---
Commercial Portfolio Segment [Member] |  |
Collateral dependent loans, fair value | $ 14,443 | $ 13,399
Commercial Real Estate Portfolio Segment [Member] |  |
Collateral dependent loans, fair value | 26,197 | 20,185
Residential Portfolio Segment [Member] |  |
Collateral dependent loans, fair value | 1,372 | 2,794
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] |  |
Collateral dependent loans, fair value | 14,443 | 13,399
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 | $ 13,960 | $ 12,193
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 | 0.61 | 0.48
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 | (0.95) | 0.73
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 | 0.64 | 0.49
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] |  |
Collateral dependent loans, fair value | $ 483 | $ 1,206
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member] |  |
Collateral dependent loans, rate | (0.05) | (0.10)
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member] |  |
Collateral dependent loans, rate | 0.35 | 0.35
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member] |  |
Collateral dependent loans, rate | 0.17 | 0.06
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Collateral dependent loans, fair value | $ 26,197 | $ 20,185
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 | $ 26,197 | $ 20,185
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 | (0.25) | (0.20)
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 | 0.10 | 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 | (0.16) | (0.06)
Fair Value, Inputs, Level 3 [Member] | Residential Portfolio Segment [Member] |  |
Collateral dependent loans, fair value | $ 1,372 | $ 2,794
Fair Value, Inputs, Level 3 [Member] | Residential Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] |  |
Collateral dependent loans, fair value | $ 1,372 | $ 2,794
Fair Value, Inputs, Level 3 [Member] | Residential Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member] |  |
Collateral dependent loans, rate | 0.21 | (0.15)
Fair Value, Inputs, Level 3 [Member] | Residential Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member] |  |
Collateral dependent loans, rate | 0.39 | 0.39
Fair Value, Inputs, Level 3 [Member] | Residential Portfolio Segment [Member] | Appraisals of Collateral Value [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member] |  |
Collateral dependent loans, rate | 0.22 | 0.05

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