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Note 1 - General (Details Textual) - USD ($) $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Jan. 01, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | [1]
Debt Securities, Held-to-maturity, Total |  | $ 18,222 |  |
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax |  | (431) |  |
Debt Securities, Available-for-sale, Total |  | $ 114,568 |  | $ 99,857
Accounting Standards Update 2017-12 [Member] |  |  |  |
Debt Securities, Held-to-maturity, Total | $ (23,400) |  |  |
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax | 431 |  |  |
Debt Securities, Available-for-sale, Total | $ 23,400 |  |  |
[1] | Derived from audited consolidated financial statements.

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