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Related Party Disclosures (Tables) | 12 Months Ended
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Dec. 31, 2024
Related Party Transactions [Abstract] |
Hagerty Related Party [Table Text Block] | The Company holds a minority ownership interest in Hagerty, which operates primarily as a managing general agent and also includes Hagerty Reinsurance Limited (Hagerty Re), a Bermuda Class 3 reinsurance company. Through the Company's underwriting operations, the Company underwrites insurance for Hagerty, a portion of which is ceded to Hagerty Re. The amounts attributed to these arrangements are summarized in the following table.
| Years Ended December 31,
(dollars in thousands) | 2024 |  | 2023 |  | 2022
Gross written premiums attributable to Hagerty | $ | 922,657 |  |  | $ | 805,673 |  |  | $ | 689,670 |
Premiums ceded to Hagerty Re | $ | 708,147 |  |  | $ | 616,491 |  |  | $ | 456,637 |

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