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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Other comprehensive income (loss): |  |  |
Other comprehensive (losses) gain, before tax | $ (508,510) | $ (103,044) |
Other comprehensive income (loss): |  |  |
Other comprehensive (losses) gain, tax effect | 75,013 | 15,477 |
Net of Tax |  |  |
Stockholders equity, beginning of year | 4,236,114 | 3,862,633 |
Other comprehensive income (loss): |  |  |
Total other comprehensive (loss) income | (433,497) | (87,567) | $ 82,087
Stockholders equity, end of year | 4,462,309 | 4,236,114 | 3,862,633
Income from other invested assets | 28,676 | 56,386 | (215)
Accumulated Other Comprehensive Income (Loss) |  |  |
Before Tax |  |  |
AOCI before tax, beginning of year | 65,280 | 168,324 |
Other comprehensive income (loss): |  |  |
AOCI before tax, end of year | (443,230) | 65,280 | 168,324
Tax Effect |  |  |
AOCI tax effect, beginning of year | (14,573) | (30,050) |
Other comprehensive income (loss): |  |  |
AOCI tax effect, end of year | 60,440 | (14,573) | (30,050)
Net of Tax |  |  |
Stockholders equity, beginning of year | 50,707 | 138,274 | 56,187
Other comprehensive income (loss): |  |  |
Total other comprehensive (loss) income | (433,497) | (87,567) | 82,087
Stockholders equity, end of year | (382,790) | 50,707 | $ 138,274
Accumulated Net Investment Gains (Losses) On Investments |  |  |
Other comprehensive income (loss): |  |  |
Unrealized holding (losses) gains arising during the year, before tax | (521,682) | (94,986) |
Less: Reclassification adjustment for gains included in net income, before tax | 13,172 | (8,058) |
Other comprehensive (losses) gain, before tax | (508,510) | (103,044) |
Other comprehensive income (loss): |  |  |
Unrealized holding (losses) gains arising during the year, tax effect | 75,118 | 13,858 |
Less: Reclassification adjustment for gains included in net income, tax effect | (105) | 1,619 |
Other comprehensive (losses) gain, tax effect | 75,013 | 15,477 |
Other comprehensive income (loss): |  |  |
Unrealized holding (losses) gains arising during the year, net of tax | (446,564) | (81,128) |
Less: Reclassification adjustment for gains included in net income, net of tax | 13,067 | (6,439) |
Total other comprehensive (loss) income | $ (433,497) | (87,567) |
Accumulated Net Investment Gains (Losses) On Investments | Other Invested Assets |  |  |
Other comprehensive income (loss): |  |  |
Income from other invested assets |  | $ 7,600 |

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