v3.26.1
Insurance Contracts - Summary of Loss Reserve Roll-Forward, Net of Subrogation Recoverable and Reinsurance (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]        
Beginning balance of net loss and loss expense reserves $ 84,268 $ 78,981    
Current Year Claims and Claims Adjustment Expense 10,689 10,325    
Prior Year Claims and Claims Adjustment Expense 8,990 171    
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims 19,679 10,496    
Claim and loss expense payments, net of subrogation and reinsurance (534) (1,120)    
Claim and loss expense (payments) recoveries, net of subrogation and reinsurance (7,504) (10,172)    
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid 8,038 11,292    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 95,909 78,185 $ 84,268 $ 78,981
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments 391,352 294,920 375,722 270,081
Policyholder Benefits and Claims Incurred, Ceded 45,601 45,778    
Ceded Loss And Loss Expenses Paid Not Yet Recovered   56,190    
Liability for Claim and Claim Adjustment Expenses Net of Subrogation recoverables 487,261 $ 373,105 459,990 $ 349,062
Liability for Claims and Claims Adjustment Expense 487,261   $ 459,990  
Insurance Claims        
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]        
Prior Year Claims and Claims Adjustment Expense 2,125      
Loss Adjustment Expenses (Legal Expenses)        
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]        
Prior Year Claims and Claims Adjustment Expense 5,787      
Segment Reporting, Reconciling Item, Corporate Nonsegment | Other Insurance Contracts        
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]        
Liability for Claims and Claims Adjustment Expense $ 21,273