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Reinsurance - Summary of Total Assets and Maximum Exposure Loss (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Variable Interest Entity [Line Items]
Total VIE Assets	$ 1,164,043
Radnor Re 2020-1 | Reinsurance Policy, Type [Axis]: Vintage Year Jan 2019 - Aug 2019
Variable Interest Entity [Line Items]
Total VIE Assets	2,350
Radnor Re 2020-1 | Reinsurance Policy, Type [Axis]: Vintage Year Jan 2019 - Dec 2019
Variable Interest Entity [Line Items]
Total VIE Assets	2,350
Radnor Re 2021-1 | Reinsurance Policy, Type [Axis]: Vintage Year Aug 2020 - Mar 2021
Variable Interest Entity [Line Items]
Total VIE Assets	309,199
Radnor Re 2021-2 | Reinsurance Policy, Type [Axis]: Vintage Year Apr 2021 - Sep 2021
Variable Interest Entity [Line Items]
Total VIE Assets	339,890
Radnor Re 2022-1 | Reinsurance Policy, Type [Axis]: Vintage Year Oct 2021 - Jul 2022
Variable Interest Entity [Line Items]
Total VIE Assets	231,142
Radnor Re 2023-1 | Reinsurance Policy, Type [Axis]: Vintage August 2022- June 2023
Variable Interest Entity [Line Items]
Total VIE Assets	281,462
VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(9,076)
Maximum Exposure to Loss, Off - Balance Sheet	298
Maximum Exposure to Loss, Total	(8,778)
Radnor Re 2020-1 Ltd. | VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	13
Maximum Exposure to Loss, Off - Balance Sheet	1
Maximum Exposure to Loss, Total	14
Radnor Re 2021-1 Ltd. | VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(4,955)
Maximum Exposure to Loss, Off - Balance Sheet	53
Maximum Exposure to Loss, Total	(4,902)
Radnor Re 2021-2 | VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	(5,212)
Maximum Exposure to Loss, Off - Balance Sheet	84
Maximum Exposure to Loss, Total	(5,128)
Radnor Re 2022-1 | VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	600
Maximum Exposure to Loss, Off - Balance Sheet	67
Maximum Exposure to Loss, Total	667
Radnor Re 2023-1 Ltd. | VIE
Variable Interest Entity [Line Items]
Maximum Exposure to Loss, On - Balance Sheet	478
Maximum Exposure to Loss, Off - Balance Sheet	93
Maximum Exposure to Loss, Total	$ 571

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