v3.26.1
Loss Reserves - Liability for Unpaid Loss and Loss Adjustment Expenses, Net of Related Amounts Recoverable from Reinsurers (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract]    
Balance, beginning of period $ 613,583 $ 651,309
Less amounts recoverable from reinsurers on unpaid loss and loss adjustment expenses 106,075 112,742
Net balance, beginning of period 507,508 538,567
Add incurred related to:    
Current accident year 109,689 98,170
Prior accident years (14,908) (17,351)
Total incurred 94,781 80,819
Less paid related to:    
Current accident year 15,598 15,305
Prior accident years 94,892 90,805
Total paid 110,490 106,110
Net balance, end of period 491,799 513,276
Add amounts recoverable from reinsurers on unpaid loss and loss adjustment expenses 102,291 110,819
Balance, end of period $ 594,090 $ 624,095