Number of reinsurers participating in the company's reinsurance program.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

The increase (decrease) during the reporting period in the amount of benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types.

+ References

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- Definition

Amount of reduction of provision for policy benefits and costs incurred for policies ceded.

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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, policy benefits and policy reserves. Excludes premiums paid under reinsurance contracts.

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Reinsurance - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($) Reinsurance	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) Reinsurance	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) Reinsurance
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Reinsurance recoverable	$ 236,022		$ 236,022		$ 289,896
Reinsurance recoverable of loss adjustment			(53,909)	$ (228,855)
Hurricane [Member]
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Reinsurance recoverable of loss adjustment	4,469		4,469
Derecognized ceded losses amount	$ 0	$ 0	$ 0	0
Hurricane Milton [Member]
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Derecognized ceded losses amount		$ (51,500)		$ (112,706)
Participating Reinsurers [Member]
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Number of reinsurers \| Reinsurance	40		40		40
Reinsurance Recoverable Including Reinsurance Premium Paid [Member] \| Reinsurer Concentration Risk [Member] \| Reinsurance [Member]
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Percentage of reinsurance recoverable major reinsurers			64.10%