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Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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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

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