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Reinsurance and Indemnification - Michigan Catastrophic Claims Association (Narrative) (Details) - USD ($)
$ in Thousands
 6 Months Ended 24 Months Ended
Jun. 30, 2025
Jun. 30, 2027
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Reinsurance Retention Policy [Line Items]          
Assets       $ 119,758,000 $ 111,617,000
Retained income       62,393,000 53,288,000
Michigan Catastrophic Claim Association          
Reinsurance Retention Policy [Line Items]          
Reinsurance and indemnification recoverables, net       $ 5,830,000 $ 6,480,000
Reinsurance increase (as a percent)       6.00%  
Retention level per claim     $ 635    
Term of catastrophe reinsurance agreement contract (in years)     2 years    
Assets $ 23,190,000   $ 23,190,000    
Retained income 1,760,000   $ 1,760,000    
Retained earnings accumulated deficit decrease $ 50,000,000        
Michigan Catastrophic Claim Association | Forecast          
Reinsurance Retention Policy [Line Items]          
Retention level per claim   $ 675      
Term of catastrophe reinsurance agreement contract (in years)   2 years