Cash, Cash Equivalents, Restricted Cash And Investments - Schedule of Contractual Maturity Date of Cash Cash Equivalents, Restricted Cash and Investments in Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
1 Year or Less	$ 375,380
Greater than 1 Year	61,494
Total	436,874	$ 458,346
Cash and money market funds [Member]
Cash and Cash Equivalents [Line Items]
1 Year or Less	26,459
Greater than 1 Year	2,404
Total	28,863	25,131
Commercial Paper [Member]
Cash and Cash Equivalents [Line Items]
1 Year or Less	3,989
Greater than 1 Year	0
Total	3,989	16,360
Corporate Notes and Bonds [Member]
Cash and Cash Equivalents [Line Items]
1 Year or Less	109,165
Greater than 1 Year	13,597
Total	122,762	174,977
US government and agency [Member]
Cash and Cash Equivalents [Line Items]
1 Year or Less	235,767
Greater than 1 Year	45,493
Total	$ 281,260	$ 236,931