XML 56 R48.htm IDEA: XBRL DOCUMENT v3.25.3
Schedule of Total Investment Return (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]        
Net investment income $ 17,911 $ 16,488 $ 47,400 $ 46,319
Net realized investment gains (losses) (3,994) (512) (3,731) 540
Change in unrealized holding gains (losses) 571 12,787 7,787 18,721
Net realized and unrealized investment returns (3,423) 12,275 4,056 19,261
Total investment return $ 14,488 $ 28,763 $ 51,456 $ 65,580
Total investment return % [1] 1.00% 2.00% 3.60% 4.60%
Average investment portfolio $ 1,434,105 $ 1,451,641 [2] $ 1,437,944 [2] $ 1,429,253 [2]
[1] Not annualized.
[2] Average of total cash and invested assets, net of receivable/payable for securities, as of the beginning and end of the period.