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Note 8 - Comprehensive Income (Loss) - Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
NON-OPERATING INCOME |  | $ 384 | $ 2,767 | $ 650 | $ 2,052 | $ 282 | $ 1,235 | $ (10) | $ (22) | $ 5,853 |  | $ 1,485 | $ 1,516
Total before tax |  |  |  |  |  |  |  |  |  | 14,631 |  | 17,772 | 34,928
Tax expense |  | (28,895) | 2,169 | 1,004 | 1,454 | 270 | 2,152 | 2,442 | 1,807 | 24,268 |  | (6,671) | (13,492)
NET INCOME |  | $ 31,561 | $ 3,446 | $ 1,609 | $ 2,283 | $ 723 | $ 3,451 | $ 3,992 | $ 2,935 | 38,899 |  | 11,101 | $ 21,436
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Total before tax | [1] |  |  |  |  |  |  |  |  | 3,343 |  | 167 |
Tax expense |  |  |  |  |  |  |  |  |  | (1,310) | [1] | (64) |
NET INCOME | [1] |  |  |  |  |  |  |  |  | 2,033 |  | 103 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
NON-OPERATING INCOME | [1] |  |  |  |  |  |  |  |  | 3,385 |  | 876 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
NON-OPERATING INCOME | [1] |  |  |  |  |  |  |  |  | $ (42) |  | $ (709) |
[1] | Amounts in parentheses indicate debits to profit/loss

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