Property and Casualty Insurance Activity - Schedule of Material Terms for Reinsurance Treaties (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended						7 Months Ended		12 Months Ended				18 Months Ended
	Jan. 31, 2026	Mar. 31, 2026 USD ($) h	Dec. 31, 2025 USD ($)	Dec. 31, 2026 USD ($)	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Apr. 30, 2026 USD ($)	Apr. 30, 2025 USD ($)	Dec. 31, 2026	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)
Effects of Reinsurance [Line Items]
Single risk coverage		$ 9,000
Catastrophe coverage, multiple of per occurrence limitation		2
Catastrophe coverage, except for one occurrence limitation		80.00%
Catastrophic coverage, first layer		$ 5,000
Excess of catastrophic coverage, first layer		$ 5,000
Catastrophe coverage, one occurrence limitation		52.00%
Catastrophic coverage, top layer		$ 240,000
Excess of catastrophic coverage, top layer		$ 200,000
Catastrophe coverage, number of consecutive hours | h		168
Reinstatement of premium protection, catastrophe coverage											$ 4,500				$ 50,000
Excess of catastrophe coverage											$ 5,500				$ 10,000
Underlying XOL treaty, reinsurance coverage (percent)								50.00%			71.00%					50.00%
Reinstatement of premium protection																$ 400
Reinstatement of premium protection, excluded amount																600
Risk retention amount						$ 640			$ 730							$ 530
Catastrophe reinsurance coverage, (percent)											71.00%
Limited retention			$ 3,900											$ 5,200
Underlying XOL treaty, excess of loss coverage amount								$ 400			$ 4,500
Underlying XOL treaty, excess of loss coverage excluded amount								$ 600			$ 5,500
Minimum
Effects of Reinsurance [Line Items]
Direct loss		$ 3,500
Maximum
Effects of Reinsurance [Line Items]
Direct loss		$ 9,000
Forecast
Effects of Reinsurance [Line Items]
Catastrophic coverage, first layer													$ 5,000
Excess of catastrophic coverage, first layer													5,000
Reinstatement of premium protection, catastrophe coverage													50,000
Excess of catastrophe coverage													$ 10,000
Underlying XOL treaty, reinsurance coverage (percent)										90.00%			50.00%
Risk retention amount													$ 825
Underlying XOL treaty, reinsurance coverage, layer one (percent)													50.00%
Reinstatement of premium protection, layer one													$ 250
Reinstatement of premium protection, layer one, excluded amount													$ 750
Underlying XOL treaty, reinsurance coverage, layer two (percent)													100.00%
Reinstatement of premium protection, layer two, excluded amount													$ 1,000
Reinstatement of premium protection, layer two													$ 9,000
Catastrophe, first layer coverage (percent)													80.00%
Catastrophe coverage, remaining (in percent)													100.00%
Catastrophe coverage, remaining layer													$ 430,000
Excess of catastrophe coverage, remaining													10,000
Limited retention										$ 5,000
Underlying XOL treaty, excess of loss coverage amount										5,000			250
Underlying XOL treaty, excess of loss coverage excluded amount										$ 5,000			750
Forecast | Minimum
Effects of Reinsurance [Line Items]
Risk retention amount													640
Forecast | Maximum
Effects of Reinsurance [Line Items]
Risk retention amount													$ 715
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						5,000	4,250
Catastrophe loss coverage in excess of quota share coverage						$ 435,000	$ 275,000
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					5,500
Catastrophe loss coverage in excess of quota share coverage					$ 434,500
Reinstatement premium protection					Yes
Personal Lines:
Effects of Reinsurance [Line Items]
Quota share treaty percent ceded	5.00%					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						8,250	8,400
in excess of 1						750	600
Total reinsurance coverage per occurrence						8,285	8,360
Losses per occurrence subject to reinsurance coverage						$ 9,000	$ 9,000
Quota share treaty percent excluded from percent ceded														6.00%
Personal Lines: | Forecast
Effects of Reinsurance [Line Items]
Quota share treaty percent ceded				5.00%	5.00%							30.00%
Risk retained on initial $1,000,000 of losses				$ 950	$ 950
Losses per occurrence subject to quota share reinsurance coverage				1,000	1,000
Excess of loss coverage and facultative facility coverage					8,250
in excess of 1					750
Total reinsurance coverage per occurrence				50	8,175
Losses per occurrence subject to reinsurance coverage				$ 1,000	$ 9,000