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Note 15 - Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2018
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 accumulated other comprehensive income (loss) as of the periods indicated:
| Three Months Ended September 30, 2018 |  | Nine Months Ended September 30, 2018
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | (73,345 | ) |  | $ | (15,402 | ) |  | $ | (57,943 | ) |  | $ | 32,669 |  |  | $ | 9,584 |  |  | $ | 23,085 |
Cumulative effect of adopting the accounting standard update for financial instruments | — |  |  | — |  |  | — |  |  | 284 |  |  | 60 |  |  | 224 |
Cumulative effect of adopting the accounting standard update for the reclassification of certain tax effects | — |  |  | — |  |  | — |  |  | — |  |  | (2,724 | ) |  | 2,724 |
Balance adjusted for cumulative effect of adopting accounting standard updates | (73,345 | ) |  | (15,402 | ) |  | (57,943 | ) |  | 32,953 |  |  | 6,920 |  |  | 26,033 |
OCI: |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | (6,762 | ) |  | (1,421 | ) |  | (5,341 | ) |  | (118,719 | ) |  | (24,931 | ) |  | (93,788 | )
Less: Reclassification adjustment for net gains (losses) included in net income (1) | (5,120 | ) |  | (1,076 | ) |  | (4,044 | ) |  | (10,775 | ) |  | (2,263 | ) |  | (8,512 | )
Net unrealized gains (losses) on investments | (1,642 | ) |  | (345 | ) |  | (1,297 | ) |  | (107,944 | ) |  | (22,668 | ) |  | (85,276 | )
Unrealized foreign currency translation adjustments | — |  |  | — |  |  | — |  |  | 4 |  |  | 1 |  |  | 3 |
OCI | (1,642 | ) |  | (345 | ) |  | (1,297 | ) |  | (107,940 | ) |  | (22,667 | ) |  | (85,273 | )
Balance at end of period | $ | (74,987 | ) |  | $ | (15,747 | ) |  | $ | (59,240 | ) |  | $ | (74,987 | ) |  | $ | (15,747 | ) |  | $ | (59,240 | )
| 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 (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 |
Unrealized 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 |
______________________ (1) Included in net gains (losses) on investments and other financial instruments on our consolidated statements of operations.

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- References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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