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Investments - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Debt and Equity Securities, Gain (Loss) |  |  |  |
Gross realized gains | $ 107 | $ 1,186 | $ 721 | $ 1,543
Gross realized losses | (231) | (1,127) | (342) | (1,552)
Net realized gains (losses) | (124) | 59 | 379 | (9)
Fair Value at Sale |  |  |  |
Fair value at sale | 62,839 | 36,958 | 126,055 | 96,498
Fair value at sale | 9,618 | 4,638 | 40,124 | 10,237
Net fair value at sale | 72,457 | 41,596 | 166,179 | 106,735
Fixed Maturities |  |  |  |
Debt and Equity Securities, Gain (Loss) |  |  |  |
Gross realized gains | 107 | 372 | 719 | 717
Gross realized losses | (212) | (57) | (308) | (394)
Fair Value at Sale |  |  |  |
Fair value at sale | 55,065 | 33,231 | 111,202 | 92,456
Fair value at sale | 7,195 | 2,221 | 31,621 | 6,739
Equity Securities |  |  |  |
Debt and Equity Securities, Gain (Loss) |  |  |  |
Gross realized gains | 0 | 814 | 2 | 826
Gross realized losses | (16) | (1,070) | (18) | (1,158)
Fair Value at Sale |  |  |  |
Fair value at sale | 0 | 3,691 | 23 | 3,971
Fair value at sale | 425 | 2,417 | 519 | 3,370
Short-term Investments |  |  |  |
Debt and Equity Securities, Gain (Loss) |  |  |  |
Gross realized gains | 0 | 0 | 0 | 0
Gross realized losses | (3) | 0 | (16) | 0
Fair Value at Sale |  |  |  |
Fair value at sale | 7,774 | 36 | 14,830 | 71
Fair value at sale | $ 1,998 | $ 0 | $ 7,984 | $ 128

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