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Investments, Summary of Realized Investment Gains (Losses) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Summary of realized investment gains [Abstract] |  |
Gains | $ 102 | $ 4,903
Losses | (72) | 0
Realized investment Losses (gains), net | 30 | 4,903
Fixed Maturities [Member] |  |
Summary of realized investment gains [Abstract] |  |
Gains | 101 | 570
Losses | (52) | 0
Realized investment Losses (gains), net | 49 | 570
Proceeds from sales of available-for-sale fixed maturities [Abstract] |  |
Sales proceeds | 3,649 | 9,244
Gross gains | 101 | 454
Gross losses | 0 | 0
Equity Securities [Member] |  |
Summary of realized investment gains [Abstract] |  |
Gains | 0 | 0
Losses | 0 | 0
Realized investment Losses (gains), net | 0 | 0
Proceeds from sales of equity securities [Abstract] |  |
Sales proceeds | 1 | 61
Gross gains | 0 | 0
Gross losses | 0 | 0
Other Invested Assets [Member] |  |
Summary of realized investment gains [Abstract] |  |
Gains | 1 | 4,333
Losses | (20) | 0
Realized investment Losses (gains), net | (19) | 4,333
Proceeds from Sales of other invested assets [Abstract] |  |
Sales proceeds | 161 | 19,761
Gross gains | 1 | 4,333
Gross losses | $ (20) | $ 0

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