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Note 2 - Fair Value of Financial Instruments - Level 3 Fair Value Measurements (Details) - Valuation, Market Approach [Member] $ in Thousands | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
--- | --- | ---
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Measurement Input, Comparability Adjustment [Member] |  |
Impaired Loans, Fair Value |  | $ 264
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member] |  |
Impaired Loans, Measurement Input |  | 0.667
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member] |  |
Impaired Loans, Measurement Input |  | 0.18
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] |  |
Impaired Loans, Fair Value | $ 1,206 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Minimum [Member] |  |
Impaired Loans, Measurement Input | 0.002 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Maximum [Member] |  |
Impaired Loans, Measurement Input | 0.2 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Weighted Average [Member] |  |
Impaired Loans, Measurement Input | 0.112 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] |  |
Impaired Loans, Fair Value | $ 263 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Minimum [Member] |  |
Impaired Loans, Measurement Input | 0.068 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Maximum [Member] |  |
Impaired Loans, Measurement Input | 0.667 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Weighted Average [Member] |  |
Impaired Loans, Measurement Input | 0.18 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Impaired Loans, Fair Value | $ 156 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied [Member] | Minimum [Member] |  |
Impaired Loans, Measurement Input | 0.078 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied [Member] | Maximum [Member] |  |
Impaired Loans, Measurement Input | 4.78 |
Fair Value, Nonrecurring [Member] | Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied [Member] | Weighted Average [Member] |  |
Impaired Loans, Measurement Input | 1.244 |
Fair Value, Recurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member] |  |
Impaired Loans, Measurement Input |  | 0.068

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X
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