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Segment Reporting - Schedule of Gross Premiums Written by Geographical Location of Subsidiaries (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	$ 553,401	$ 474,123	$ 1,878,645	$ 1,517,247
Total International
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	325,525	307,140	957,981	832,049
Lloyd's of London
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	192,380	189,155	590,339	507,326
Ireland
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	99,650	96,272	283,776	271,002
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	33,495	21,713	83,866	53,721
Bermuda
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	$ 227,876	$ 166,983	$ 920,664	$ 685,198

X

- Definition

Amount of direct and assumed premiums written.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 605
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

+ Details

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+ References

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