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Note 14 - Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table shows the rollforward of AOCI as of the periods indicated:
| Three Months Ended September 30, 2017 |  | Nine Months Ended September 30, 2017
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | 27,878 |  |  | $ | 9,761 |  |  | $ | 18,117 |  |  | $ | (19,063 | ) |  | $ | (6,668 | ) |  | $ | (12,395 | )
OCI: |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 9,598 |  |  | 3,359 |  |  | 6,239 |  |  | 52,069 |  |  | 18,224 |  |  | 33,845 |
Less: Reclassification adjustment for net gains (losses) included in net income (loss) (1) | 170 |  |  | 59 |  |  | 111 |  |  | (4,134 | ) |  | (1,447 | ) |  | (2,687 | )
Net unrealized gains (losses) on investments | 9,428 |  |  | 3,300 |  |  | 6,128 |  |  | 56,203 |  |  | 19,671 |  |  | 36,532 |
Net foreign currency translation adjustments | 39 |  |  | 11 |  |  | 28 |  |  | 205 |  |  | 69 |  |  | 136 |
OCI | 9,467 |  |  | 3,311 |  |  | 6,156 |  |  | 56,408 |  |  | 19,740 |  |  | 36,668 |
Balance at end of period | $ | 37,345 |  |  | $ | 13,072 |  |  | $ | 24,273 |  |  | $ | 37,345 |  |  | $ | 13,072 |  |  | $ | 24,273 |
| Three Months Ended September 30, 2016 |  | Nine Months Ended September 30, 2016
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | 95,548 |  |  | $ | 33,443 |  |  | $ | 62,105 |  |  | $ | (28,425 | ) |  | $ | (9,948 | ) |  | $ | (18,477 | )
OCI: |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 10,682 |  |  | 3,739 |  |  | 6,943 |  |  | 133,253 |  |  | 46,639 |  |  | 86,614 |
Less: Reclassification adjustment for net gains (losses) included in net income (loss) (1) | 5,685 |  |  | 1,990 |  |  | 3,695 |  |  | 3,533 |  |  | 1,237 |  |  | 2,296 |
Net unrealized gains (losses) on investments | 4,997 |  |  | 1,749 |  |  | 3,248 |  |  | 129,720 |  |  | 45,402 |  |  | 84,318 |
Net foreign currency translation adjustments | (47 | ) |  | (11 | ) |  | (36 | ) |  | (523 | ) |  | (177 | ) |  | (346 | )
Net actuarial loss | 240 |  |  | 84 |  |  | 156 |  |  | (34 | ) |  | (12 | ) |  | (22 | )
OCI | 5,190 |  |  | 1,822 |  |  | 3,368 |  |  | 129,163 |  |  | 45,213 |  |  | 83,950 |
Balance at end of period | $ | 100,738 |  |  | $ | 35,265 |  |  | $ | 65,473 |  |  | $ | 100,738 |  |  | $ | 35,265 |  |  | $ | 65,473 |
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(1) | Included in net gains (losses) on investments and other financial instruments on our consolidated statements of operations.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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