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Premiums and Reinsurance Related Information (Tables) | 9 Months Ended
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Sep. 30, 2025
Insurance [Abstract] |
Reinsurance Financial Information | The following is a summary of insurance and reinsurance financial information:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
(In thousands) | 2025 |  | 2024 |  | 2025 |  | 2024
Written premiums: |  |  |  |  |  |  |
Direct | $ | 3,483,768 |  |  | $ | 3,303,682 |  |  | $ | 10,405,445 |  |  | $ | 9,723,219 |
Assumed | 352,488 |  |  | 329,596 |  |  | 1,092,519 |  |  | 990,587 |
Ceded | (609,326) |  |  | (576,002) |  |  | (1,786,292) |  |  | (1,678,460) |
Total net premiums written | $ | 3,226,930 |  |  | $ | 3,057,276 |  |  | $ | 9,711,672 |  |  | $ | 9,035,346 |
Earned premiums: |  |  |  |  |  |  |
Direct | $ | 3,401,897 |  |  | $ | 3,141,883 |  |  | $ | 9,970,992 |  |  | $ | 9,127,399 |
Assumed | 352,745 |  |  | 346,780 |  |  | 1,028,862 |  |  | 1,012,804 |
Ceded | (598,260) |  |  | (561,840) |  |  | (1,732,906) |  |  | (1,602,618) |
Total net premiums earned | $ | 3,156,382 |  |  | $ | 2,926,823 |  |  | $ | 9,266,948 |  |  | $ | 8,537,585 |
Ceded losses and loss expenses incurred | $ | 286,799 |  |  | $ | 319,472 |  |  | $ | 955,974 |  |  | $ | 952,666 |
Ceded commissions earned | $ | 138,091 |  |  | $ | 129,916 |  |  | $ | 413,614 |  |  | $ | 374,618 |
Premium receivable, allowance for credit loss | The following table presents the rollforward of the allowance for expected credit losses for premiums and fees receivable for the nine months ended September 30, 2025 and 2024:
(In thousands) | 2025 |  | 2024
Allowance for expected credit losses, beginning of period | $ | 39,884 |  |  | $ | 35,110 |
Change in expected credit losses | 41 |  |  | 2,961 |
Allowance for expected credit losses, end of period | $ | 39,925 |  |  | $ | 38,071 |
The following table presents the rollforward of the allowance for expected credit losses for premiums and fees receivable for the three months ended September 30, 2025 and 2024:
(In thousands) | 2025 |  | 2024
Allowance for expected credit losses, beginning of period | $ | 38,960 |  |  | $ | 37,279 |
Change in expected credit losses | 965 |  |  | 792 |
Allowance for expected credit losses, end of period | $ | 39,925 |  |  | $ | 38,071 |
Reinsurance Recoverable, Allowance for Credit Loss | The following table presents the rollforward of the allowance for expected credit losses associated with due from reinsurers for the nine months ended September 30, 2025 and 2024:
(In thousands) | 2025 |  | 2024 |  |
Allowance for expected credit losses, beginning of period | $ | 8,350 |  |  | $ | 8,404 |  |  |
Change in expected credit losses | (1,751) |  |  | (72) |  |  |
Allowance for expected credit losses, end of period | $ | 6,599 |  |  | $ | 8,332 |  |  |
The following table presents the rollforward of the allowance for expected credit losses associated with due from reinsurers for the three months ended September 30, 2025 and 2024:
(In thousands) | 2025 |  | 2024 |  |
Allowance for expected credit losses, beginning of period | $ | 6,954 |  |  | $ | 10,255 |  |  |
Change in expected credit losses | (355) |  |  | (1,923) |  |  |
Allowance for expected credit losses, end of period | $ | 6,599 |  |  | $ | 8,332 |  |  |

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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479032/944-605-50-1 + Details
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- Definition Tabular disclosure of allowance for credit loss on premium receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Tabular disclosure of allowance for credit loss on reinsurance recoverable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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