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Note 14 - Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2020
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, 2020 |  |  |  |  |  | Six Months Ended June 30, 2020 |  |  |  |
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | 37,722 |  |  | $ | 7,921 |  |  | $ | 29,801 |  |  | $ | 139,858 |  |  | $ | 29,370 |  |  | $ | 110,488 |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period for which an allowance for expected credit losses has not been recognized | 234,249 |  |  | 49,193 |  |  | 185,056 |  |  | 142,738 |  |  | 29,975 |  |  | 112,763 |
Less: Reclassification adjustment for net gains (losses) included in net income (loss): (1) |  |  |  |  |  |  |  |  |  |  |
Net realized gains (losses) on disposals and non-credit related impairment losses | 6,195 |  |  | 1,301 |  |  | 4,894 |  |  | 16,820 |  |  | 3,532 |  |  | 13,288 |
Net decrease (increase) in expected credit losses | (2,782) |  |  | (584) |  |  | (2,198) |  |  | (2,782) |  |  | (584) |  |  | (2,198) |
Net unrealized gains (losses) on investments | 230,836 |  |  | 48,476 |  |  | 182,360 |  |  | 128,700 |  |  | 27,027 |  |  | 101,673 |
Other comprehensive income (loss) | 230,836 |  |  | 48,476 |  |  | 182,360 |  |  | 128,700 |  |  | 27,027 |  |  | 101,673 |
Balance at end of period | $ | 268,558 |  |  | $ | 56,397 |  |  | $ | 212,161 |  |  | $ | 268,558 |  |  | $ | 56,397 |  |  | $ | 212,161 |
| Three Months Ended June 30, 2019 |  |  |  |  |  | Six Months Ended June 30, 2019 |  |  |  |
(In thousands) | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period | $ | 22,144 |  |  | $ | 4,650 |  |  | $ | 17,494 |  |  | $ | (77,114) |  |  | $ | (16,194) |  |  | $ | (60,920) |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 91,140 |  |  | 19,140 |  |  | 72,000 |  |  | 189,903 |  |  | 39,880 |  |  | 150,023 |
Less: Reclassification adjustment for net gains (losses) included in net income (loss) (1) | 1,303 |  |  | 274 |  |  | 1,029 |  |  | 808 |  |  | 170 |  |  | 638 |
Net unrealized gains (losses) on investments | 89,837 |  |  | 18,866 |  |  | 70,971 |  |  | 189,095 |  |  | 39,710 |  |  | 149,385 |
Unrealized foreign currency translation adjustments | (4) |  |  | (1) |  |  | (3) |  |  | (4) |  |  | (1) |  |  | (3) |
Other comprehensive income (loss) | 89,833 |  |  | 18,865 |  |  | 70,968 |  |  | 189,091 |  |  | 39,709 |  |  | 149,382 |
Balance at end of period | $ | 111,977 |  |  | $ | 23,515 |  |  | $ | 88,462 |  |  | $ | 111,977 |  |  | $ | 23,515 |  |  | $ | 88,462 |
______________________ (1)Included in net gains (losses) on investments and other financial instruments on our condensed consolidated statements of operations.

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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=118930883&loc=SL7669686-108580 + Details
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