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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Rollforward of Accumulated Other Comprehensive Loss | The following table presents the rollforward of accumulated other comprehensive loss for the three and nine months ended September 30, 2023 and 2022:
|  | Three Months Ended September 30,
|  | 2023 |  | 2022
(In thousands) |  | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of period |  | $ | (416,193) |  |  | $ | 56,058 |  |  | $ | (360,135) |  |  | $ | (332,126) |  |  | $ | 45,559 |  |  | $ | (286,567) |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding (losses) gains arising during the period |  | (89,283) |  |  | 12,851 |  |  | (76,432) |  |  | (158,835) |  |  | 21,899 |  |  | (136,936) |
Less: Reclassification adjustment for gains included in net income (1) |  | 235 |  |  | (51) |  |  | 184 |  |  | (175) |  |  | 101 |  |  | (74) |
Net unrealized (losses) gains on investments |  | (89,048) |  |  | 12,800 |  |  | (76,248) |  |  | (159,010) |  |  | 22,000 |  |  | (137,010) |
Other comprehensive (loss) income |  | (89,048) |  |  | 12,800 |  |  | (76,248) |  |  | (159,010) |  |  | 22,000 |  |  | (137,010) |
Balance at end of period |  | $ | (505,241) |  |  | $ | 68,858 |  |  | $ | (436,383) |  |  | $ | (491,136) |  |  | $ | 67,559 |  |  | $ | (423,577) |
|  | Nine Months Ended September 30,
|  | 2023 |  | 2022
(In thousands) |  | Before Tax |  | Tax Effect |  | Net of Tax |  | Before Tax |  | Tax Effect |  | Net of Tax
Balance at beginning of year |  | $ | (443,230) |  |  | $ | 60,440 |  |  | $ | (382,790) |  |  | $ | 65,280 |  |  | $ | (14,573) |  |  | $ | 50,707 |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) on investments: |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period |  | (64,323) |  |  | 8,760 |  |  | (55,563) |  |  | (564,064) |  |  | 81,051 |  |  | (483,013) |
Less: Reclassification adjustment for losses included in net income (1) |  | 2,312 |  |  | (342) |  |  | 1,970 |  |  | 7,648 |  |  | 1,081 |  |  | 8,729 |
Net unrealized gains (losses) on investments |  | (62,011) |  |  | 8,418 |  |  | (53,593) |  |  | (556,416) |  |  | 82,132 |  |  | (474,284) |
Other comprehensive income (loss) |  | (62,011) |  |  | 8,418 |  |  | (53,593) |  |  | (556,416) |  |  | 82,132 |  |  | (474,284) |
Balance at end of period |  | $ | (505,241) |  |  | $ | 68,858 |  |  | $ | (436,383) |  |  | $ | (491,136) |  |  | $ | 67,559 |  |  | $ | (423,577) |
(1)Included in net realized investment losses on our condensed consolidated statements of comprehensive income.

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