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Reinsurance - Summary of Premium Received and Capital at Risk (Details) - Shoreline Re	9 Months Ended
	Sep. 30, 2025 USD ($)
All Other Perils Catastrophe Excess of Loss Agreement | Reinsurance Contract [Axis]: 01/01/2024 - 01/01/2025
Ceded Credit Risk [Line Items]
Capital at Risk	$ 4,500,000
All Other Perils Catastrophe Excess of Loss Agreement | Reinsurance Contract [Axis]: 01/01/2025 - 12/31/2025
Ceded Credit Risk [Line Items]
Premium Collected	1,296,000
Capital at Risk	2,304,000
Excess Per Risk Agreement | Reinsurance Contract [Axis]: 02/01/2024 - 02/01/2025
Ceded Credit Risk [Line Items]
Premium Collected	1,867,000
Capital at Risk	$ 633,000
Quota Share Agreement
Ceded Credit Risk [Line Items]
Cession Rate	45.00%
Quota Share Agreement | Reinsurance Contract [Axis]: 06/01/2024 - 06/01/2026
Ceded Credit Risk [Line Items]
Cession Rate	30.00%
Capital at Risk	$ 4,200,000
Quota Share Agreement | Reinsurance Contract [Axis]: 06/01/2025 - 06/01/2026
Ceded Credit Risk [Line Items]
Cession Rate	45.00%
Capital at Risk	$ 33,346,000

X

- Definition

Reinsurance capital at risk.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Reinsurance premium received.

+ References

No definition available.

+ Details

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X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 825
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477351/944-825-50-1B

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 825
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477351/944-825-50-1B

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X

- Definition

Percentage of risk undertaken originally by insurer ceded to reinsurer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479838/944-20-50-3

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