Reinsurance and Indemnification - Michigan Catastrophic Claims Association (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended	24 Months Ended
	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2023	Dec. 31, 2024	Dec. 31, 2023
Reinsurance Retention Policy [Line Items]
Assets				$ 111,617,000	$ 103,362,000
Retained income				53,288,000	49,716,000
Michigan Catastrophic Claim Association
Reinsurance Retention Policy [Line Items]
Reinsurance and indemnification recoverables, net				$ 6,480,000	$ 6,420,000
Reinsurance increase (as a percent)				6.00%
Retention level per claim			$ 600
Term of catastrophe reinsurance agreement contract (in years)			2 years
Assets	$ 22,370,000
Retained income	2,100,000
Retained earnings accumulated deficit decrease	$ 47,300,000
Michigan Catastrophic Claim Association | Forecast
Reinsurance Retention Policy [Line Items]
Retention level per claim		$ 635
Term of catastrophe reinsurance agreement contract (in years)		2 years