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Nature of Operations and Basis of Presentation - Schedule of Effects of Reinsurance (Details) - Radnor Re	9 Months Ended
	Sep. 30, 2025
Reinsurance Policy, Type [Axis]: January 1, 2021 to December 31, 2024
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Ceding Percentage	35.00%
Reinsurance Policy, Type [Axis]: January 1, 2025 to Present
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Ceding Percentage	50.00%
Reinsurance Policy, Type [Axis]: Prior to January 1, 2021
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Ceding Percentage	25.00%

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- Definition

Reinsurance, Ceded Premiums Earned, Percent Of Risk On All Other Eligible Policies

+ References

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column F
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Paragraph Column E
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
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-Paragraph Column D
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Number 210
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-Paragraph Column A
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 17
-Publisher SEC

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Section S99
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
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-Section S99
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-Section S99
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-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Section S99
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-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

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-Section S99
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