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Note 15 - Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 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 June 30, 2018 |  | Six Months Ended June 30, 2018
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | (39,842 | ) |  | $ | (8,367 | ) |  | $ | (31,475 | ) |  | $ | 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 | (39,842 | ) |  | (8,367 | ) |  | (31,475 | ) |  | 32,953 |  |  | 6,920 |  |  | 26,033 |
OCI: |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | (35,194 | ) |  | (7,390 | ) |  | (27,804 | ) |  | (111,957 | ) |  | (23,510 | ) |  | (88,447 | )
Less: Reclassification adjustment for net gains (losses) included in net income (1) | (1,691 | ) |  | (355 | ) |  | (1,336 | ) |  | (5,655 | ) |  | (1,187 | ) |  | (4,468 | )
Net unrealized gains (losses) on investments | (33,503 | ) |  | (7,035 | ) |  | (26,468 | ) |  | (106,302 | ) |  | (22,323 | ) |  | (83,979 | )
Unrealized foreign currency translation adjustments | — |  |  | — |  |  | — |  |  | 4 |  |  | 1 |  |  | 3 |
OCI | (33,503 | ) |  | (7,035 | ) |  | (26,468 | ) |  | (106,298 | ) |  | (22,322 | ) |  | (83,976 | )
Balance at end of period | $ | (73,345 | ) |  | $ | (15,402 | ) |  | $ | (57,943 | ) |  | $ | (73,345 | ) |  | $ | (15,402 | ) |  | $ | (57,943 | )
| Three Months Ended June 30, 2017 |  | Six Months Ended June 30, 2017
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | (5,168 | ) |  | $ | (1,805 | ) |  | $ | (3,363 | ) |  | $ | (19,063 | ) |  | $ | (6,668 | ) |  | $ | (12,395 | )
OCI: |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 31,137 |  |  | 10,898 |  |  | 20,239 |  |  | 42,471 |  |  | 14,865 |  |  | 27,606 |
Less: Reclassification adjustment for net gains (losses) included in net income (1) | (1,795 | ) |  | (628 | ) |  | (1,167 | ) |  | (4,304 | ) |  | (1,506 | ) |  | (2,798 | )
Net unrealized gains (losses) on investments | 32,932 |  |  | 11,526 |  |  | 21,406 |  |  | 46,775 |  |  | 16,371 |  |  | 30,404 |
Unrealized foreign currency translation adjustments | 114 |  |  | 40 |  |  | 74 |  |  | 166 |  |  | 58 |  |  | 108 |
OCI | 33,046 |  |  | 11,566 |  |  | 21,480 |  |  | 46,941 |  |  | 16,429 |  |  | 30,512 |
Balance at end of period | $ | 27,878 |  |  | $ | 9,761 |  |  | $ | 18,117 |  |  | $ | 27,878 |  |  | $ | 9,761 |  |  | $ | 18,117 |
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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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- 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://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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