Fair Value Measurements - Summary of Company's Investments (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Schedule Of Available For Sale Securities [Line Items]
Investments, Amortized cost	$ 170,104	$ 169,160
Investments, Gross unrealized gains	2,001	1,588
Investments, Gross unrealized losses	(1,038)	(71)
Investments, at fair value	171,067	170,677
Corporate Debt [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	59,593	58,110
Securities available-for-sale, Gross unrealized gains	60	333
Securities available-for-sale, Gross unrealized losses	(181)	(3)
Securities available-for-sale, Fair value	59,472	58,440
U.S. Treasuries [Member]
Schedule Of Available For Sale Securities [Line Items]
Trading securities, Amortized cost	100,408	100,487
Trading securities, Gross unrealized gains	0	329
Trading securities, Gross unrealized losses	(857)	(44)
Trading securities, Fair value	99,551	100,772
Mutual Funds Held In Rabbi Trust [Member]
Schedule Of Available For Sale Securities [Line Items]
Trading securities, Amortized cost	10,103	10,563
Trading securities, Gross unrealized gains	1,941	926
Trading securities, Gross unrealized losses	0	(24)
Trading securities, Fair value	$ 12,044	$ 11,465