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Note 6 - Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2020
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
(Dollars in thousands) |  | Unrealized gains/(losses) on available-for-sale securities (a) |
Balance as of December 31, 2018 |  | $ | (154 | )
Other comprehensive income |  |  | 795 |
Balance at March 31, 2019 |  | $ | 641 |
Balance as of December 31, 2019 |  | $ | 1,842 |
Other comprehensive (loss) |  |  | (4,079 | )
Balance at March 31, 2020 |  | $ | (2,237 | )

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