Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Aggregated Fair Value	$ 126,003	$ 181,856
Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	126,066	181,848
Short-term investments, Gross Unrealized Holding Gains	2	17
Short-term investments, Gross Unrealized Holding Losses	(65)	(9)
Short-term investments, Aggregated Fair Value	126,003	181,856
Recurring | Cash equivalents
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Aggregated Fair Value	27,715	75,410
Recurring | Short-term available for sale securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Aggregated Fair Value	98,288	106,446
Recurring | Level 1 | Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	21,477	46,134
Short-term investments, Aggregated Fair Value	21,477	46,134
Recurring | Level 2 | Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	59,647	76,605
Short-term investments, Gross Unrealized Holding Losses	(10)	(2)
Short-term investments, Aggregated Fair Value	59,637	76,603
Recurring | Level 2 | U.S. government bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	21,662	7,093
Short-term investments, Gross Unrealized Holding Losses	(42)
Short-term investments, Aggregated Fair Value	21,620	7,093
Recurring | Level 2 | Corporate Debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	8,776	11,890
Short-term investments, Gross Unrealized Holding Gains	1
Short-term investments, Gross Unrealized Holding Losses	(1)	(6)
Short-term investments, Aggregated Fair Value	8,776	11,884
Recurring | Level 2 | Agency bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	7,747	29,654
Short-term investments, Gross Unrealized Holding Gains	1	15
Short-term investments, Gross Unrealized Holding Losses	(7)
Short-term investments, Aggregated Fair Value	7,741	29,669
Recurring | Level 2 | Municipal Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	4,251	5,592
Short-term investments, Gross Unrealized Holding Gains		2
Short-term investments, Gross Unrealized Holding Losses	(4)	(1)
Short-term investments, Aggregated Fair Value	4,247	5,593
Recurring | Level 2 | Non-US debt securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	2,506
Short-term investments, Gross Unrealized Holding Losses	(1)
Short-term investments, Aggregated Fair Value	$ 2,505
Recurring | Level 2 | U.S. treasury bills
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost		4,680
Short-term investments, Aggregated Fair Value		4,680
Recurring | Level 2 | Agency discount securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost		200
Short-term investments, Aggregated Fair Value		$ 200