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Note 7 - Fair Value - Financial Assets At Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Securities | $ 132,634 | $ 85,694
Certificates of Deposit [Member] |  |
Securities | 1,240 | 2,728
US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 390 |
US Treasury and Government [Member] |  |
Securities | 125,005 |
Residential Mortgage-Backed Securities [Member] |  |
Securities | 4,538 | 4,833
Collateralized Mortgage-Backed Securities [Member] |  |
Securities | 1,461 | 1,580
US Treasury Securities [Member] |  |
Securities | 125,005 | 76,553
Fair Value, Inputs, Level 1 [Member] |  |
Securities | 125,005 | 76,553
Fair Value, Inputs, Level 1 [Member] | Certificates of Deposit [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 0 |
Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member] |  |
Securities | 125,005 |
Fair Value, Inputs, Level 1 [Member] | Residential Mortgage-Backed Securities [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage-Backed Securities [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member] |  |
Securities |  | 76,553
Fair Value, Inputs, Level 2 [Member] |  |
Securities | 7,629 | 9,141
Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member] |  |
Securities | 1,240 | 2,728
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 390 |
Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member] |  |
Securities | 0 |
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage-Backed Securities [Member] |  |
Securities | 4,538 | 4,833
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage-Backed Securities [Member] |  |
Securities | 1,461 | 1,580
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] |  |
Securities |  | 0
Fair Value, Inputs, Level 3 [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Certificates of Deposit [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 0 |
Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member] |  |
Securities | 0 |
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage-Backed Securities [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage-Backed Securities [Member] |  |
Securities | $ 0 | 0
Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member] |  |
Securities |  | $ 0

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