Cash and Investments in Marketable Securities - Portfolio of Cash and Investments in Marketable Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash	$ 5,427	$ 17,843
Total cash and investments in marketable securities	326,016	329,441
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	291,157
Gross Unrealized Gains	2
Gross Unrealized Losses	(427)
Fair Value	290,732	294,123
Level 2 | Corporate notes and bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	75,745
Gross Unrealized Gains	2
Gross Unrealized Losses	(163)
Fair Value	75,584	38,882
Level 2 | Corporate commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	211,955
Gross Unrealized Gains	0
Gross Unrealized Losses	(261)
Fair Value	211,694	255,241
Level 2 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	3,457
Gross Unrealized Gains	0
Gross Unrealized Losses	(3)
Fair Value	3,454	0
Level 2 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	13,898	15,116
Level 1 | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	$ 15,959	$ 2,359