Property and Casualty Insurance Activity - Schedule of Material Terms for Reinsurance Treaties (Details) $ in Thousands	3 Months Ended	6 Months Ended				7 Months Ended	12 Months Ended			18 Months Ended
	Mar. 31, 2025 USD ($) h	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Apr. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
Effects of Reinsurance [Line Items]
Single risk coverage	$ 9,000
Catastrophe coverage, multiple of per occurrence limitation	2
Catastrophic coverage, first layer	$ 5,000
Excess of catastrophic coverage, first layer	$ 5,000
Catastrophe coverage, number of consecutive hours | h	168
Reinstatement of premium protection											$ 50,000
Excess of catastrophe coverage											$ 10,000
Underlying XOL treaty, reinsurance coverage (percent)									50.00%
Limited retention									$ 4,800
Subsequent Event
Effects of Reinsurance [Line Items]
Reinstatement of premium protection						$ 4,500
Excess of catastrophe coverage						$ 5,500
Underlying XOL treaty, reinsurance coverage (percent)						71.00%
Catastrophe reinsurance coverage, (percent)						71.00%
Minimum
Effects of Reinsurance [Line Items]
Direct loss	$ 3,500
Reduces retention									530
Maximum
Effects of Reinsurance [Line Items]
Direct loss	$ 9,000
Reduces retention									$ 730
Forecast
Effects of Reinsurance [Line Items]
Reinstatement of premium protection								$ 50,000		$ 400
Excess of catastrophe coverage								$ 10,000		$ 600
Underlying XOL treaty, reinsurance coverage (percent)										50.00%
Limited retention							$ 5,200
Forecast | Minimum
Effects of Reinsurance [Line Items]
Retention increases							530
Forecast | Maximum
Effects of Reinsurance [Line Items]
Retention increases							$ 640
Catastrophe Reinsurance:
Effects of Reinsurance [Line Items]
Initial loss subject to personal lines quota share treaty				$ 10,000	$ 10,000
Risk retained per catastrophe occurrence				4,750	9,500
Catastrophe loss coverage in excess of quota share coverage				$ 275,000	$ 315,000
Reinstatement premium protection				Yes	Yes
Catastrophe Reinsurance: | Forecast
Effects of Reinsurance [Line Items]
Initial loss subject to personal lines quota share treaty		$ 10,000	$ 10,000
Risk retained per catastrophe occurrence			4,250
Catastrophe loss coverage in excess of quota share coverage			$ 275,000
Reinstatement premium protection			Yes
Personal Lines:
Effects of Reinsurance [Line Items]
Quota share treaty percent ceded				27.00%	27.00%				27.00%
Risk retained on initial $1,000,000 of losses				$ 730	$ 730
Losses per occurrence subject to quota share reinsurance coverage				1,000	1,000
Excess of loss coverage and facultative facility coverage				8,400	8,400
in excess of 1				600	600
Total reinsurance coverage per occurrence				8,470	8,470
Losses per occurrence subject to reinsurance coverage				$ 9,000	$ 9,000
Quota share treaty percent excluded from percent ceded									22.00%
Personal Lines: | Forecast
Effects of Reinsurance [Line Items]
Quota share treaty percent ceded		16.00%	16.00%				16.00%
Risk retained on initial $1,000,000 of losses		$ 840	$ 840
Losses per occurrence subject to quota share reinsurance coverage		1,000	1,000
Excess of loss coverage and facultative facility coverage			8,400
in excess of 1			600
Total reinsurance coverage per occurrence		160	8,360
Losses per occurrence subject to reinsurance coverage		$ 1,000	$ 9,000
Quota share treaty percent excluded from percent ceded							6.00%