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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Carrying Amounts and Estimated Fair Values of Financial Insruments | The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments as of December 31, 2022 and 2021:
| 2022 |  | 2021
(In thousands) | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Assets: |  |  |  |  |  |  |
Fixed maturity securities | $ | 17,587,349 |  |  | $ | 17,591,626 |  |  | $ | 16,602,673 |  |  | $ | 16,614,118 |
Equity securities | 1,185,894 |  |  | 1,185,894 |  |  | 941,243 |  |  | 941,243 |
Arbitrage trading account | 944,230 |  |  | 944,230 |  |  | 1,179,606 |  |  | 1,179,606 |
Loans receivable | 193,002 |  |  | 187,981 |  |  | 115,172 |  |  | 116,534 |
Cash and cash equivalents | 1,449,346 |  |  | 1,449,346 |  |  | 1,568,843 |  |  | 1,568,843 |
Trading accounts receivable from brokers and clearing organizations | 233,863 |  |  | 233,863 |  |  | — |  |  | — |
Due from broker | 3,609 |  |  | 3,609 |  |  | 20,448 |  |  | 20,448 |
Liabilities: |  |  |  |  |  |  |
Due to broker | — |  |  | — |  |  | 53,636 |  |  | 53,636 |
Trading account securities sold but not yet purchased | — |  |  | — |  |  | 1,169 |  |  | 1,169 |
Senior notes and other debt | 1,828,823 |  |  | 1,439,188 |  |  | 2,259,416 |  |  | 2,526,630 |
Subordinated debentures | 1,008,371 |  |  | 805,600 |  |  | 1,007,652 |  |  | 1,095,600 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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