Condensed Consolidated Statements of Earnings and Comprehensive Earnings - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Income Statement [Abstract] | ||||
| Net premiums earned | $ 424,914 | $ 407,695 | $ 1,253,396 | $ 1,207,944 |
| Net investment income | 46,694 | 41,270 | 135,057 | 117,414 |
| Net realized gains | 8,637 | 18,318 | 27,603 | 48,234 |
| Net unrealized gains (losses) on equity securities | (3,282) | 41,981 | 60,346 | 43,163 |
| Consolidated revenue | 476,963 | 509,264 | 1,476,402 | 1,416,755 |
| Losses and settlement expenses | 201,341 | 187,998 | 584,480 | 549,814 |
| Policy acquisition costs | 134,147 | 128,937 | 400,897 | 378,126 |
| Insurance operating expenses | 30,657 | 30,215 | 91,554 | 86,683 |
| Interest expense on debt | 4,200 | 1,364 | 10,994 | 4,049 |
| General corporate expenses | 3,388 | 5,045 | 12,335 | 12,747 |
| Total expenses | 373,733 | 353,559 | 1,100,260 | 1,031,419 |
| Equity in earnings of unconsolidated investees | (3,137) | 1,540 | 1,980 | 7,055 |
| Earnings before income taxes | 100,093 | 157,245 | 378,122 | 392,391 |
| Income tax expense | 19,084 | 32,635 | 74,200 | 80,231 |
| Net earnings | 81,009 | 124,610 | 303,922 | 312,160 |
| Other comprehensive earnings (loss), net of tax | (117,809) | 27,674 | (145,489) | 76,405 |
| Comprehensive earnings (loss) | $ (36,800) | $ 152,284 | $ 158,433 | $ 388,565 |
| Basic net earnings per share (in dollars per share) | $ 0.88 | $ 1.36 | $ 3.31 | $ 3.4 |
| Diluted net earnings per share (in dollars per share) | $ 0.88 | $ 1.35 | $ 3.29 | $ 3.38 |
| Weighted average number of common shares outstanding: | ||||
| Basic weighted average number of common shares outstanding (in shares) | 91,795 | 91,849 | 91,881 | 91,816 |
| Diluted weighted average number of common shares outstanding (in shares) | 92,251 | 92,310 | 92,259 | 92,460 |
| X | ||||||||||
- Definition General corporate expenses. No definition available.
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- Definition Amount of deferred policy acquisition costs charged to expense in the period, generally in proportion to related revenue earned, estimated gross profits, or over the customer relationship or some other period, as well as direct period costs related to acquisition of insurance policies. No definition available.
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- Definition The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of realized gain (loss) on investment. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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