v3.25.2
Summarized Activity in Liability for Unpaid Losses and Loss Adjustment Expenses (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Insurance [Abstract]        
Balance at beginning of period $ 794,848 $ 853,602 $ 800,391 $ 850,599
Less: ceded reinsurance receivables 62,731 71,814 60,754 72,829
Net balance at beginning of period 732,117 781,788 739,637 777,770
Net losses and loss adjustment expenses related to:        
Current year 52,946 53,744 119,681 107,127
Prior years 2 (82) 5 (81)
Total net losses and loss adjustment expenses 52,948 53,662 119,686 107,046
Paid net losses and loss adjustment expenses related to:        
Current year 15,785 18,489 33,776 24,086
Prior years 52,631 43,147 108,898 86,916
Total paid net losses and loss adjustment expenses 68,416 61,636 142,674 111,002
Net balance at end of period 716,649 773,814 716,649 773,814
Plus: ceded reinsurance receivables 59,478 70,392 59,478 70,392
Balance at end of period $ 776,127 $ 844,206 $ 776,127 $ 844,206