Fair Value Measurements and Fair Value of Financial Instruments - Summary of Cash Equivalents and Short-term Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	$ 182,440	$ 271,309
Unrealized Gains	7	1
Unrealized Losses	(1,044)	(317)
Estimated Fair Value	181,403	270,993
Less: cash equivalents, amortized cost basis	(84,741)	(25,808)
Less: cash equivalents, unrealized gains	(1)	0
Less: cash equivalents, unrealized losses	4	1
Less: cash equivalents, estimated fair value	(84,738)	(25,807)
Money market funds \| Level 1
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	607	10,311
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	607	10,311
U.S. government and agency securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	62,209	62,268
Unrealized Gains	0	0
Unrealized Losses	(811)	(218)
Estimated Fair Value	61,398	62,050
Commercial paper \| Level 2
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	181,168	177,215
Unrealized Gains	1	1
Unrealized Losses	(179)	(61)
Estimated Fair Value	180,990	177,155
Corporate Bond Securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	23,197	47,323
Unrealized Gains	7	0
Unrealized Losses	(58)	(39)
Estimated Fair Value	23,146	47,284
Total cash equivalents and short-term investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost Basis	267,181	297,117
Unrealized Gains	8	1
Unrealized Losses	(1,048)	(318)
Estimated Fair Value	$ 266,141	$ 296,800

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Cash and cash equivalent gross unrealized gain.

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Cash and cash equivalent gross unrealized loss.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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