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Note 5 - Investments Net Gains (Losses) on Investments (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Gain (Loss) on Securities [Line Items] |  |  |
Net realized gains (losses) on investments |  | $ 11,639 | $ (1,687)
Net unrealized gain (losses) on investments |  | (26,845) | 19,469
Total net gains (losses) on investments |  | (15,828) | 17,782
Fixed-maturities available for sale |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Fixed maturities available for sale, net realized gain (loss) | [1] | 11,247 | (495)
Gross investment gains from sales and redemptions |  | 11,899 | 4,165
Gross investment losses from sales and redemptions |  | (652) | (4,660)
Trading Securities |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Trading securities, net realized gain (loss) |  | 49 | (684)
Equity securities |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Equity securities, net realized gain (loss) |  | 310 | (680)
Short-term investments |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Other investments, net realized gain (loss) |  | 33 | 172
OTTI Recognized in Earnings |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Impairment losses |  |  | $ 0
OTTI Recognized in Earnings Due to Intent to Sell |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Impairment losses |  | $ (622) |
[1] | Components of net realized gains (losses) on fixed-maturities available for sale include:
| Three Months Ended March 31,
(In thousands) | 2020 |  | 2019
Gross investment gains from sales and redemptions | $ | 11,899 |  |  | $ | 4,165 |
Gross investment losses from sales and redemptions | (652 | ) |  | (4,660 | )

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- Definition This amount represents the net realized gains (losses) on all fixed-maturities, equity, trading, short-term, and other-invested assets securities, excluding other-than-temporary impairments and net unrealized gains (losses) on investment securities. + References No definition available. + Details
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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
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- Definition Amount of realized and unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27405-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 8A -URI http://asc.fasb.org/extlink&oid=118954083&loc=SL6284422-111562 + Details
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