Fair-Value Measurements - Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	$ 367,527	$ 183,909
Certificates of deposit classified as non-current restricted investments	1,054	1,054
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	367,732	183,931
Certificates of deposit classified as non-current restricted investments	1,054	1,054
Total	368,786	184,985
Fair Value, Measurements, Recurring \| Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	73,882	84,882
Fair Value, Measurements, Recurring \| US Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	293,850	99,049
Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	367,732	183,931
Certificates of deposit classified as non-current restricted investments	1,054	1,054
Total	368,786	184,985
Fair Value, Measurements, Recurring \| Level 1 \| Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	73,882	84,882
Fair Value, Measurements, Recurring \| Level 1 \| US Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	$ 293,850	$ 99,049

Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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