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Investments - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Reported Value Measurement [Member] |  |  |  |
Investment [Table] |  |  |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | $ 68,440 | $ 47,275 |  |
Other Investments | 24,971 | 28,294 |  |
Securities fair value | 34,016 | 22,861 |  |
Fair Value of Securities Deposited in Connection wtih Letter of Credit | 153 |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 | 0 |  |
Equity Securities Excluded From Fair Value | 17,517 | 20,618 |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 70,090 | 47,275 | $ 19,223 | $ 19,940
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 68,440 | 47,275 |  |
Other than Temporary Impairment Losses, Investments | (3,100) | (6,517) | $ 0 |
Insurance Distribution |  |  |  |
Investment [Table] |  |  |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 2,656 | $ 2,845 |  |
Commitments [Member] | Private Equity Funds |  |  |  |
Investment [Table] |  |  |  |
Other Investments | $ 1,501 |  |  |

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