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Note 6 - Investments - Net Gains (Losses) on Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Gain (Loss) on Securities [Line Items] |  |  |  |
Net realized gains (losses) on investments | $ 14,246 | $ 13,973 | $ 18,330 | $ 32,636
Impairment losses due to intent to sell | 0 | 0 | 0 | (1,401)
Net decrease (increase) in expected credit losses | 0 | 186 | 918 | (2,596)
Net unrealized gain (losses) on investments | (11,342) | 2,813 | (5,825) | 916
Total net gains (losses) on investments | 2,904 | 16,972 | 13,423 | 29,555
Fixed-maturities available for sale |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |
Fixed maturities available for sale, net realized gain (loss) | 4,098 | 13,777 | 5,684 | 31,998
Gross investment gains from sales and redemptions | 5,874 | 14,219 | 19,588 | 34,422
Gross investment losses from sales and redemptions | (1,776) | (442) | (13,904) | (2,424)
Trading Securities |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |
Trading securities, net realized gain (loss) | 0 | 0 | 391 | 4
Equity securities |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |
Equity securities, net realized gain (loss) | 8,632 | 0 | 8,405 | 361
Other investments |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |
Other investments, net realized gain (loss) | $ 1,516 | $ 196 | $ 3,850 | $ 273

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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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