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Investments - Schedule of Components of Investment Gains (Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Realized Investment Gains Losses [Abstract] |  |  |  |
Gross gains from sales of available-for-sale securities fixed maturity securities | $ 420 | $ 3,213 | $ 1,022 | $ 3,978
Gross losses from sales of available-for-sale fixed maturity securities | (364) | (1,804) | (390) | (1,947)
Realized investment gains (losses) | 56 | 1,409 | 632 | 2,031
Credit losses impairment of available-for-sale securities |  | (704) | 81 | (858)
Market gains (losses) recognized in net income during the period on equity securities | (1,949) | 112 | (1,833) | 1,536
Gains (losses) from bifurcated options |  | (33) |  | (50)
Gains (losses) on trading securities | 1 | (83) | (21) | (192)
Other investment gains (losses) | (1,948) | (708) | (1,773) | 436
Investment gains (losses) | $ (1,892) | $ 701 | $ (1,141) | $ 2,467

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