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Reinsurance - Summary of Total Assets and Maximum Exposure Loss (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Radnor Re 2021-1 Ltd. | Reinsurance Policy, Type [Axis]: Vintage Year Aug 2020 - Mar 2021
Variable Interest Entity [Line Items]
Total VIE Assets	$ 280,941
Radnor Re 2021-2 Ltd. | Reinsurance Policy, Type [Axis]: Vintage Year Apr 2021 - Sep 2021
Variable Interest Entity [Line Items]
Total VIE Assets	322,709
Radnor Re 2022-1 Ltd. | Reinsurance Policy, Type [Axis]: Vintage Year Oct 2021 - Jul 2022
Variable Interest Entity [Line Items]
Total VIE Assets	219,606
Radnor Re 2023-1 Ltd. | Reinsurance Policy, Type [Axis]: Vintage August 2022- June 2023
Variable Interest Entity [Line Items]
Total VIE Assets	281,462
Radnor Re, Total
Variable Interest Entity [Line Items]
Total VIE Assets	1,104,718
VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(10,976)
Maximum Exposure to Loss, Off - Balance Sheet	263
Maximum Exposure to Loss, Total	(10,713)
VIE | Radnor Re 2021-1 Ltd.
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(5,210)
Maximum Exposure to Loss, Off - Balance Sheet	47
Maximum Exposure to Loss, Total	(5,163)
VIE | Radnor Re 2021-2 Ltd.
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(5,743)
Maximum Exposure to Loss, Off - Balance Sheet	76
Maximum Exposure to Loss, Total	(5,667)
VIE | Radnor Re 2022-1 Ltd.
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	40
Maximum Exposure to Loss, Off - Balance Sheet	56
Maximum Exposure to Loss, Total	96
VIE | Radnor Re 2023-1 Ltd.
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(63)
Maximum Exposure to Loss, Off - Balance Sheet	84
Maximum Exposure to Loss, Total	$ 21

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