v3.26.1
Reinsurance (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Program Services Fronting        
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]        
Reinsurance Recoverable, Credit Loss Expense (Reversal)     $ 205,346 $ 0
Fronting        
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]        
Gross losses and loss adjustment expenses $ 993,500 $ 1,300,000 $ 2,200,000 $ 2,300,000