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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 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 months ended March 31, 2023 and 2022:
|  | Three Months Ended March 31,
|  | 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 |  | 67,693 |  |  | (9,476) |  |  | 58,217 |  |  | (246,255) |  |  | 34,830 |  |  | (211,425) |
Less: Reclassification adjustment for losses included in net income (1) |  | 488 |  |  | 48 |  |  | 536 |  |  | 7,352 |  |  | 1,067 |  |  | 8,419 |
Net unrealized gains (losses) on investments |  | 68,181 |  |  | (9,428) |  |  | 58,753 |  |  | (238,903) |  |  | 35,897 |  |  | (203,006) |
Other comprehensive income (loss) |  | 68,181 |  |  | (9,428) |  |  | 58,753 |  |  | (238,903) |  |  | 35,897 |  |  | (203,006) |
Balance at end of period |  | $ | (375,049) |  |  | $ | 51,012 |  |  | $ | (324,037) |  |  | $ | (173,623) |  |  | $ | 21,324 |  |  | $ | (152,299) |
(1)Included in net realized investment losses on our condensed consolidated statements of comprehensive income.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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