Reinsurance - Schedule of Line of Business Treaty Period (Details) $ in Thousands	3 Months Ended	4 Months Ended	6 Months Ended						7 Months Ended		12 Months Ended								18 Months Ended
	Dec. 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Dec. 31, 2026 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 ($)	Apr. 30, 2025 USD ($)	Jun. 30, 2027 USD ($)	Dec. 31, 2026	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($) h	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2025 USD ($)
Reinsurance Retention [Line Items]
Catastrophe coverage, multiple of per occurrence limitation														2
Catastrophe coverage, except for one occurrence limitation														80.00%
Catastrophe, first layer coverage														$ 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, duration of occurrence | 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, amount																			$ 400
Reinstatement of premium protection, excluded amount																			600
Risk retention amount					$ 640													$ 730	$ 530
Catastrophe reinsurance coverage, (percent)										71.00%
Underlying XOL treaty, excess of loss coverage amount										$ 4,500						$ 400
Underlying XOL treaty, excess of loss coverage, excluded amount										$ 5,500						600
Retention limited under XOL treaty	$ 3,900	$ 5,200														$ 4,800
Property And Casualty Personal Insurance Product Lines
Reinsurance Retention [Line Items]
Quota share treaty percent excluded for named catastrophe from percent ceded														6.00%		22.00%
Quota share treaty percent ceded														16.00%		27.00%
Catastrophe Reinsurance:
Reinsurance Retention [Line Items]
Initial loss subject to personal lines quota share treaty					10,000	$ 10,000	$ 10,000	$ 10,000
Risk retained per catastrophe occurrence					5,000	4,250	4,750	9,500
Catastrophe loss coverage in excess of quota share coverage					$ 435,000	$ 275,000	$ 275,000	$ 315,000
Reinstatement premium protection					Yes	Yes	Yes	Yes
Personal Lines
Reinsurance Retention [Line Items]
Percent ceded					16.00%	16.00%	27.00%	27.00%
Risk retained on initial $1,000,000 of losses					$ 840	$ 840	$ 730	$ 730
Losses per occurrence subject to quota share reinsurance coverage					1,000	1,000	1,000	1,000
Excess of loss coverage and facultative facility coverage					8,250	8,400	8,400	8,400
In excess of					750	600	600	600
Total reinsurance coverage per occurrence					8,285	8,360	8,470	8,470
Losses per occurrence subject to reinsurance coverage					$ 9,000	$ 9,000	$ 9,000	$ 9,000
Single risk coverage														$ 9,000
Personal Lines | Minimum
Reinsurance Retention [Line Items]
Direct loss																	$ 3,500
Personal Lines | Maximum
Reinsurance Retention [Line Items]
Direct loss																	$ 9,000
Forecast
Reinsurance Retention [Line Items]
Catastrophe, first layer coverage													$ 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		$ 715
Underlying excess of loss 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 excess of loss 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													100.00%
Catastrophe coverage, remaining layer													$ 430,000
Excess of catastrophe coverage, remaining													10,000
Underlying XOL treaty, excess of loss coverage amount									$ 5,000				250
Underlying XOL treaty, excess of loss coverage, excluded amount									$ 5,000				$ 750
Retention limited under XOL treaty				$ 5,000
Forecast | Property And Casualty Personal Insurance Product Lines
Reinsurance Retention [Line Items]
Quota share treaty percent ceded												30.00%
Forecast | Catastrophe Reinsurance:
Reinsurance Retention [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
Forecast | Personal Lines
Reinsurance Retention [Line Items]
Percent ceded			5.00%	5.00%
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				750
Total reinsurance coverage per occurrence			50	8,175
Losses per occurrence subject to reinsurance coverage			$ 1,000	$ 9,000