v3.26.3
Historical Loss and LAE Development - Reconciliation of Unpaid Losses and Settlement Expenses (LAE) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Unpaid losses and LAE at beginning of year    
Gross $ 2,886,819 $ 2,693,470
Ceded (746,798) (755,425)
Net 2,140,021 1,938,045
Increase (decrease) in incurred losses and LAE    
Current accident year 682,665 623,926
Prior accident year (98,185) (74,112)
Total incurred 584,480 549,814
Loss and LAE payments for claims incurred    
Current accident year (72,996) (74,868)
Prior accident years (380,986) (309,548)
Total paid (453,982) (384,416)
Net unpaid losses and LAE at end of year 2,270,519 2,103,443
Unpaid losses and LAE at end of year    
Gross 2,997,555 2,873,054
Ceded (727,036) (769,611)
Net unpaid losses and LAE at end of year $ 2,270,519 $ 2,103,443