v3.26.1
Loss reserves - Activity for the Liability for Loss Reserves (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]    
Gross loss reserves, beginning balance $ 572,470  
Gross loss reserves, ending balance 598,686  
Domestic mortgage insurance    
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]    
Gross loss reserves, beginning balance 566,809 $ 520,032
Reinsurance recoverable, beginning balance 3,326 2,909
Net loss reserves, beginning balance 563,483 517,123
Losses and LAE incurred related to current accident year 145,837 144,624
Losses and LAE incurred related to prior accident years (84,180) (98,142)
Total incurred 61,657 46,482
Losses and LAE paid related to current accident year 2,538 142
Losses and LAE paid related to prior accident years (38,957) (20,083)
Total paid (36,419) (19,941)
Net loss reserves, ending balance 588,721 543,664
Reinsurance recoverable, ending balance 3,039 2,646
Gross loss reserves, ending balance $ 591,760 $ 546,310