Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Amortized cost on fixed maturities trading investments | $ 5,802,102 | $ 5,449,726 |
| Cost - equity security trading investments | 860,929 | 728,460 |
| Cost - short-term investments | 368,338 | 336,978 |
| Reinsurance recoverable, allowance for credit losses | (1) | (39) |
| Fixed assets, accumulated depreciation | $ 376,010 | $ 345,930 |
| Common Stock | ||
| Common stock, shares authorized (in shares) | 70,000,000 | 70,000,000 |
| Common stock, shares issued (in shares) | 55,389,000 | 55,389,000 |
| Common stock, shares outstanding (in shares) | 55,389,000 | 55,389,000 |
| X | ||||||||||
- Definition Cost of investments in short-term bonds and money market instruments. No definition available.
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| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on reinsurance recoverable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amortized cost of investments in debt securities classified as trading. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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