Property and Casualty Insurance Activity - Schedule of Material Terms for Reinsurance Treaties (Details) $ in Thousands	3 Months Ended	4 Months Ended	6 Months Ended					7 Months Ended		9 Months Ended	12 Months Ended					18 Months Ended
	Dec. 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Apr. 30, 2026 USD ($)	Apr. 30, 2025 USD ($)	Sep. 30, 2025 USD ($) h	Jun. 30, 2026 USD ($)	Dec. 31, 2025	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	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)									71.00%					50.00%		50.00%
Reinstatement of premium protection																$ 400
Reinstatement of premium protection, excluded amount																600
Risk retention amount															$ 730	$ 530
Catastrophe reinsurance coverage, (percent)									71.00%
Limited retention		$ 5,200												$ 4,800
Underlying XOL treaty, excess of loss coverage amount									$ 4,500					400
Underlying XOL treaty, excess of loss coverage excluded amount									$ 5,500					$ 600
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				$ 640							$ 715
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	$ 3,900
Underlying XOL treaty, excess of loss coverage amount								$ 5,000			250
Underlying XOL treaty, excess of loss coverage excluded amount								$ 5,000			$ 750
Catastrophe Reinsurance:
Effects of Reinsurance [Line Items]
Initial loss subject to personal lines quota share treaty					$ 10,000	$ 10,000	$ 10,000
Risk retained per catastrophe occurrence					4,250	4,750	9,500
Catastrophe loss coverage					$ 275,000	$ 275,000	$ 315,000
Reinstatement premium protection					Yes	Yes	Yes
Catastrophe Reinsurance: | Forecast
Effects of Reinsurance [Line Items]
Initial loss subject to personal lines quota share treaty				10,000
Risk retained per catastrophe occurrence			$ 6,000	5,000
Catastrophe loss coverage			$ 434,000	$ 435,000
Reinstatement premium protection			Yes	Yes
Personal Lines:
Effects of Reinsurance [Line Items]
Quota share treaty percent ceded					16.00%	27.00%	27.00%							27.00%
Risk retained on initial $1,000,000 of losses					$ 840	$ 730	$ 730
Losses per occurrence subject to quota share reinsurance coverage					1,000	1,000	1,000
Excess of loss coverage and facultative facility coverage					8,400	8,400	8,400
in excess of 1					600	600	600
Total reinsurance coverage per occurrence					8,360	8,470	8,470
Losses per occurrence subject to reinsurance coverage					$ 9,000	$ 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%
Risk retained on initial $1,000,000 of losses				$ 840
Losses per occurrence subject to quota share reinsurance coverage				1,000
Excess of loss coverage and facultative facility coverage			$ 8,250	8,250
in excess of 1			750	750
Total reinsurance coverage per occurrence			8,125	8,285
Losses per occurrence subject to reinsurance coverage			$ 9,000	$ 9,000
Quota share treaty percent excluded from percent ceded												6.00%