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Note 17 - Accumulated Other Comprehensive Income (Loss) Rollforward of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Balance at beginning of period, net of tax |  | $ (60,920) |  |
Unrealized holding gains (losses) arising during the period, net of tax |  | 180,441 | $ (97,356) | $ 31,903
Less: Reclassification adjustment for net gains (losses) included in net income, net of tax |  | 8,897 | (10,270) | (2,642)
Net unrealized gains (losses) on investments, net of tax |  | 171,544 | (87,086) | 34,545
Unrealized foreign currency translation adjustments, net of tax |  | 0 | 5 | 150
Less: Reclassification adjustment for liquidation of foreign subsidiary and other adjustments included in net income, net of tax |  | 3 | 1 | (721)
Net foreign currency translation adjustments |  | (3) | 4 | 871
Net actuarial gains (losses), net of tax |  | (133) | 129 | 64
OCI, net of tax |  | 171,408 | (86,953) | 35,480
Balance at end of period, net of tax |  | 110,488 | (60,920) |
Other Comprehensive Income (Loss) |  |  |  |
Other Comprehensive Income (Loss), before Tax [Abstract] |  |  |  |
Balance at beginning of period, before tax |  | (77,114) | 32,669 | (19,063)
Cumulative effect of adopting the accounting standard update, before tax |  |  | 284 |
Balance adjusted for cumulative effect of adopting accounting standard updates, before tax |  |  | 32,953 |
Unrealized holding gains (losses) arising during the period, before tax |  | 228,406 | (123,235) | 46,235
Less: Reclassification adjustment for net gains (losses) included in net income, before tax | [1] | 11,262 | (13,000) | (4,065)
Net unrealized gains (losses) on investments |  | 217,144 | (110,235) | 50,300
Unrealized foreign currency translation adjustments, before tax |  | 0 | 5 | 225
Less: Reclassification adjustment for liquidation of foreign subsidiary and other adjustments included in net income, before tax | [2] | 4 | 0 | (1,109)
Net foreign currency translation adjustments, before tax |  | (4) | 5 | 1,334
Net actuarial gain (loss), before tax |  | (168) | 163 | 98
OCI, before tax |  | 216,972 | (110,067) | 51,732
Balance at end of period, before tax |  | 139,858 | (77,114) | 32,669
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |
Balance at beginning of period, tax |  | (16,194) | 9,584 | (6,668)
Cumulative effect of adopting the accounting standard update, tax |  |  | (2,664) |
Balance adjusted for cumulative effect of adopting accounting standard updates, tax |  |  | 6,920 |
Unrealized holding gains (losses) arising during the period, tax |  | 47,965 | (25,879) | 14,332
Less: Reclassification adjustment for net gains (losses) included in net income, tax | [1] | 2,365 | (2,730) | (1,423)
Net unrealized gains (losses) on investments, tax |  | 45,600 | (23,149) | 15,755
Unrealized foreign currency translation adjustments, tax |  | 0 | 1 | 75
Less: Reclassification adjustment for liquidation of foreign subsidiary and other adjustments included in net income, tax | [2] | 1 | 0 | (388)
Net foreign currency translation adjustments, tax |  | (1) | 1 | 463
Net actuarial gains (losses), tax |  | (35) | 34 | 34
OCI, tax |  | 45,564 | (23,114) | 16,252
Balance at end of period, tax |  | 29,370 | (16,194) | 9,584
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Balance at beginning of period, net of tax |  | (60,920) | 23,085 | (12,395)
Cumulative effect of adopting the accounting standard update for financial instruments, net of tax |  |  | 2,948 |
Balance adjusted for cumulative effect of adopting accounting standard updates, net of tax |  |  | 26,033 |
Unrealized holding gains (losses) arising during the period, net of tax |  | 180,441 | (97,356) | 31,903
Less: Reclassification adjustment for net gains (losses) included in net income, net of tax | [1] | 8,897 | (10,270) | (2,642)
Net unrealized gains (losses) on investments, net of tax |  | 171,544 | (87,086) | 34,545
Unrealized foreign currency translation adjustments, net of tax |  | 0 | 4 | 150
Less: Reclassification adjustment for liquidation of foreign subsidiary and other adjustments included in net income, net of tax | [2] | 3 | 0 | (721)
Net foreign currency translation adjustments |  | (3) | 4 | 871
Net actuarial gains (losses), net of tax |  | (133) | 129 | 64
OCI, net of tax |  | 171,408 | (86,953) | 35,480
Balance at end of period, net of tax |  | $ 110,488 | $ (60,920) | $ 23,085
[1] | Included in net gains (losses) on investments and other financial instruments in our consolidated statements of operations.
[2] | Included in restructuring and other exit costs in our consolidated statements of operations.

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