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Note 13 - Fair Value and Interest Rate Risk - Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Available-for-sale securities | $ 83,260 | $ 94,341
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 59,890 | 66,629
Corporate Debt Securities [Member] |  |
Available-for-sale securities | 14,732 | 16,921
Subordinated Notes [Member] |  |
Available-for-sale securities | 3,069 | 4,626
SBA Loan Pools [Member] |  |
Available-for-sale securities | 5,055 | 5,603
US States and Political Subdivisions Debt Securities [Member] |  |
Available-for-sale securities | 514 | 562
Fair Value, Recurring [Member] |  |
Available-for-sale securities | 83,260 | 94,341
Interest rate swap liability | 333 | 738
Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Interest rate swap | 333 | 738
Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 59,890 | 66,629
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities | 14,732 | 16,921
Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities | 3,069 | 4,626
Fair Value, Recurring [Member] | SBA Loan Pools [Member] |  |
Available-for-sale securities | 5,055 | 5,603
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Available-for-sale securities | 514 | 562
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] |  |
Available-for-sale securities | 0 | 0
Interest rate swap liability | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Interest rate swap | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | SBA Loan Pools [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |
Available-for-sale securities | 72,023 | 81,161
Interest rate swap liability | 333 | 738
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Interest rate swap | 333 | 738
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 59,890 | 66,629
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities | 3,495 | 3,741
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities | 3,069 | 4,626
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | SBA Loan Pools [Member] |  |
Available-for-sale securities | 5,055 | 5,603
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Available-for-sale securities | 514 | 562
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] |  |
Available-for-sale securities | 11,237 | 13,180
Interest rate swap liability | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Interest rate swap | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] |  |
Available-for-sale securities | 11,237 | 13,180
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Subordinated Notes [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | SBA Loan Pools [Member] |  |
Available-for-sale securities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Available-for-sale securities | $ 0 | $ 0

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