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Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended	6 Months Ended
	Aug. 17, 2026	Jul. 08, 2026	Jul. 01, 2026	Jun. 30, 2026	Jun. 30, 2026	Jun. 30, 2025
Subsequent Event [Line Items]
Per Share Amount					$ 0.8	$ 0.8
Repurchases of common stock, Shares				363,538	473,609
Repurchases of common stock, Value				$ 57,720	$ 75,221
Authorization amount share repurchase program				$ 75,000	$ 75,000
Common Stock [Member]
Subsequent Event [Line Items]
Repurchases of common stock, Shares				363,538	473,609
Subsequent Event [Member]
Subsequent Event [Line Items]
Repurchases of common stock, Shares	504,330
Repurchases of common stock, Value	$ 80,000
Subsequent Event [Member] \| Exzeo Group Inc [Member]
Subsequent Event [Line Items]
Repurchases of common stock, Shares		834,250
Repurchases of common stock, Value		$ 12,000
Subsequent Event [Member] \| O2026Q2DividendsMember
Subsequent Event [Line Items]
Per Share Amount			$ 0.4
Dividends, date of declared			Jul. 01, 2026
Date of Record			Aug. 21, 2026
Payment Date			Sep. 18, 2026