Investments in Marketable Securities - Summary of Investments Classified As Available-For-Sale Securities (Parenthetical) (Detail)	Sep. 30, 2024 USD ($) Security	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) Security
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized gain position | Security	270		49
Number of securities in unrealized loss position | Security	58		115
Unrealized losses, aggregate	$ 218,000	$ 254,000
Short-term investments – available for sale	880,093,000	306,563,000
Unrealized gains, aggregate	2,195,000	156,000
Cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments – available for sale	0	0
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, aggregate	138,000	128,000
Short-term investments classified as available-for-sale, noncurrent	189,800,000
Unrealized gains, aggregate	1,954,000	148,000
Government debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, aggregate	80,000	126,000
Short-term investments classified as available-for-sale, noncurrent		0
Unrealized gains, aggregate	241,000	$ 8,000
Maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized gains, individually	100,000		$ 37,000
Unrealized losses, individually	42,000		23,000
Unrealized losses, aggregate	218,000		258,000
Unrealized gains, aggregate	$ 2,200,000		$ 158,000