v3.26.1
Losses and Loss Adjustment Expenses - Schedule of Liability for Unpaid Claims and Claims Adjustment Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]        
Reserves for losses and LAE, beginning of period $ 2,318,894 $ 1,782,383    
Reserves for losses and LAE, beginning of period     $ 2,796,491  
Less: reinsurance recoverable on unpaid claims, beginning of period     (1,067,551)  
Less: reinsurance recoverable on unpaid claims, beginning of period (921,165) (670,846)    
Reserves for losses and LAE, beginning of period, net of reinsurance 1,808,994 1,164,690 $ 1,728,940 $ 1,111,537
Incurred, net of reinsurance, related to:        
Current period 233,969 187,309    
Prior years 0 0    
Total incurred, net of reinsurance 233,969 187,309    
Paid, net of reinsurance, related to:        
Current period 15,838 15,256    
Prior years 138,077 118,900    
Total paid 153,915 134,156    
Net reserves for losses and LAE, end of period 1,808,994 1,164,690    
Plus: reinsurance recoverable on unpaid claims, end of period 1,109,909 706,801    
Reserves for losses and LAE, end of period $ 2,918,903 $ 1,871,491