Concentration of Risks - Credit Risk Related to Recoverable Reinsurance (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Ceded Credit Risk [Line Items]
Reinsurance recoverable, credit loss allowance	$ 1,100	$ 1,100
Reinsurer Concentration Risk
Ceded Credit Risk [Line Items]
Net reinsurance recoverable	446,737	456,720
Funds withheld payable	407,928	420,945
Net reinsurance credit exposure	41,570	41,304
A \| Reinsurer Concentration Risk \| Medico Insurance Company
Ceded Credit Risk [Line Items]
Net reinsurance recoverable	4,448	4,466
Funds withheld payable	0	0
Net reinsurance credit exposure	4,448	4,466
Not Rated \| Reinsurer Concentration Risk \| Front Street Re
Ceded Credit Risk [Line Items]
Net reinsurance recoverable	268,108	273,981
Funds withheld payable	230,986	237,143
Net reinsurance credit exposure	37,122	36,838
Not Rated \| Reinsurer Concentration Risk \| Nichol International Reinsurance (S.A.C), Ltd.
Ceded Credit Risk [Line Items]
Net reinsurance recoverable	174,181	178,273
Funds withheld payable	176,942	183,802
Net reinsurance credit exposure	$ 0	$ 0

Reinsurance Recoverable, Net Credit Exposure

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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

The carrying amount as of the balance sheet date of the known and estimated amounts owed to insurers under reinsurance treaties or other arrangements.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss on reinsurance recoverable.

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- Definition

Amount before 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, premium paid, policy benefits and policy reserves.

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