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Note 14 - Accumulated Other Comprehensive Income Rollforward of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Other Comprehensive Income, Net of Tax [Abstract] |  |  |  |  |
AOCI, Net of Tax, beginning balance |  |  |  | $ (12,395) |
Unrealized holding gains (losses) arising during the period |  | $ 20,239 | $ 40,297 | 27,606 | $ 79,671
Less: Reclassification adjustment for net gains (losses) included in net income (loss) |  | (1,167) | 758 | (2,798) | (1,399)
Net foreign currency translation adjustments |  | 74 | (225) | 108 | (310)
Net actuarial gains (losses) |  | 0 | 0 | 0 | (178)
Other comprehensive income (loss), net of tax |  | 21,480 | 39,314 | 30,512 | 80,582
AOCI, Net of Tax, ending balance |  | 18,117 |  | 18,117 |
Other Comprehensive Income |  |  |  |  |
Other Comprehensive Income, before Tax [Abstract] |  |  |  |  |
AOCI before Tax, Attributable to Parent, beginning balance |  | (5,168) | 35,064 | (19,063) | (28,425)
Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax |  | 31,137 | 61,996 | 42,471 | 122,571
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax | [1] | (1,795) | 1,166 | (4,304) | (2,152)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax |  | 32,932 | 60,830 | 46,775 | 124,723
Net foreign currency translation adjustments, before tax |  | 114 | (346) | 166 | (476)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax |  |  | 0 |  | (274)
Other comprehensive income, before tax |  | 33,046 | 60,484 | 46,941 | 123,973
AOCI before Tax, Attributable to Parent, ending balance |  | 27,878 | 95,548 | 27,878 | 95,548
Other Comprehensive Income, Tax [Abstract] |  |  |  |  |
AOCI, Tax, beginning balance |  | (1,805) | 12,273 | (6,668) | (9,948)
Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax |  | 10,898 | 21,699 | 14,865 | 42,900
Less: Reclassification adjustment for net (losses) gains included in net income, tax | [1] | (628) | 408 | (1,506) | (753)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax |  | 11,526 | 21,291 | 16,371 | 43,653
Net foreign currency translation adjustments, tax |  | 40 | (121) | 58 | (166)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax |  |  | 0 |  | (96)
Other Comprehensive Income, Tax |  | 11,566 | 21,170 | 16,429 | 43,391
AOCI Tax, ending balance |  | 9,761 | 33,443 | 9,761 | 33,443
Other Comprehensive Income, Net of Tax [Abstract] |  |  |  |  |
AOCI, Net of Tax, beginning balance |  | (3,363) | 22,791 | (12,395) | (18,477)
Unrealized holding gains (losses) arising during the period |  | 20,239 | 40,297 | 27,606 | 79,671
Less: Reclassification adjustment for net gains (losses) included in net income (loss) | [1] | (1,167) | 758 | (2,798) | (1,399)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent |  | 21,406 | 39,539 | 30,404 | 81,070
Net foreign currency translation adjustments |  | 74 | (225) | 108 | (310)
Net actuarial gains (losses) |  |  | 0 |  | (178)
Other comprehensive income (loss), net of tax |  | 21,480 | 39,314 | 30,512 | 80,582
AOCI, Net of Tax, ending balance |  | $ 18,117 | $ 62,105 | $ 18,117 | $ 62,105
[1] | Included in net gains (losses) on investments and other financial instruments on our consolidated statements of operations.

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 3: 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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- Definition Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners). + References No definition available. + Details
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