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Note 10 - Comprehensive Income (Loss) - Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
NON-OPERATING (EXPENSE) INCOME | $ (4,704) | $ 935 | $ 632 | $ (879) | $ 384 | $ 2,767 | $ 650 | $ 2,052 | $ (4,016) | $ 5,853 | $ 1,485
Total before tax |  |  |  |  |  |  |  |  | 31,341 | 14,631 | 17,772
Tax expense | 1,883 | 3,129 | 2,005 | 330 | (28,895) | 2,169 | 1,004 | 1,454 | (7,347) | 24,268 | (6,671)
NET INCOME | $ 6,070 | $ 9,248 | $ 7,289 | $ 1,387 | $ 31,561 | $ 3,446 | $ 1,609 | $ 2,283 | 23,994 | 38,899 | $ 11,101
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |  |  |  |
Total before tax |  |  |  |  |  |  |  |  |  | 3,343 |
Tax expense |  |  |  |  |  |  |  |  |  | (1,310) |
NET INCOME |  |  |  |  |  |  |  |  |  | 2,033 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
NON-OPERATING (EXPENSE) INCOME |  |  |  |  |  |  |  |  |  | 3,385 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
NON-OPERATING (EXPENSE) INCOME |  |  |  |  |  |  |  |  |  | $ (42) |

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