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Note 13 - Fair Value - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Total securities available-for-sale | $ 422,868 | $ 410,669
US Government-sponsored Enterprises Debt Securities [Member] |  |
Total securities available-for-sale | 12,617 |
Money Market Funds [Member] |  |
Total securities available-for-sale |  | 52,941
US Treasury Securities [Member] |  |
Total securities available-for-sale | 402 | 7,860
Collateralized Mortgage Obligations and Residential Mortgage Backed Securities [Member] |  |
Total securities available-for-sale | 188,122 | 154,736
US States and Political Subdivisions Debt Securities [Member] |  |
Total securities available-for-sale | 220,783 | 194,203
Collateralized Debt Obligations [Member] |  |
Total securities available-for-sale | 944 | 929
Fair Value, Recurring [Member] |  |
Total securities available-for-sale | 422,868 | 410,669
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale | 0 | 52,941
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale | 421,924 | 356,799
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale | 944 | 929
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |
Total securities available-for-sale | 12,617 | 7,860
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale | 12,617 | 7,860
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Money Market Funds [Member] |  |
Total securities available-for-sale |  | 52,941
Fair Value, Recurring [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale |  | 52,941
Fair Value, Recurring [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale |  | 0
Fair Value, Recurring [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale |  | 0
Fair Value, Recurring [Member] | US Treasury Securities [Member] |  |
Total securities available-for-sale | 402 |
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale | 0 |
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale | 402 |
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale | 0 |
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations and Residential Mortgage Backed Securities [Member] |  |
Total securities available-for-sale | 188,122 | 154,736
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations and Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations and Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale | 188,122 | 154,736
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations and Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Total securities available-for-sale | 220,783 | 194,203
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale | 220,783 | 194,203
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] |  |
Total securities available-for-sale | 944 | 929
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total securities available-for-sale | $ 944 | $ 929

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