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Note 7 - Fair Value - Financial Assets At Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Securities | $ 264,905 | $ 153,203
US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 937 | 934
US Treasury and Government [Member] |  |
Securities | 122,266 |
US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities | 137,825 | 35,391
Residential Mortgage-Backed Securities [Member] |  |
Securities | 2,989 | 3,367
Collateralized Mortgage-Backed Securities [Member] |  |
Securities | 888 | 1,003
US Treasury Securities [Member] |  |
Securities | 122,266 | 112,508
Fair Value, Inputs, Level 1 [Member] |  |
Securities | 122,266 | 112,508
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member] |  |
Securities | 122,266 |
Fair Value, Inputs, Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities | 0 | 0
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 |  | 112,508
Fair Value, Inputs, Level 2 [Member] |  |
Securities | 142,639 | 40,695
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 937 | 934
Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member] |  |
Securities | 0 |
Fair Value, Inputs, Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities | 137,825 | 35,391
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage-Backed Securities [Member] |  |
Securities | 2,989 | 3,367
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage-Backed Securities [Member] |  |
Securities | 888 | 1,003
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] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member] |  |
Securities | 0 |
Fair Value, Inputs, Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities | 0 | 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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