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Fair Value Measurements - Schedule of Assets Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Restricted cash | $ 5,788 | $ 5,794
Total | 978,986 | 854,097
Money Market Fund |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 98,459 | 106,234
US government agencies |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 2,977 | 9,925
Marketable securities, current | 82,116 | 42,068
Marketable securities, non-current | 140,776 | 135,749
Commercial Paper |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 5,974 |
Marketable securities, current | 10,684 | 15,851
Corporate Bonds |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Marketable securities, current | 192,268 | 214,127
Marketable securities, non-current | 250,846 | 164,388
US Treasuries |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents |  | 1,497
Marketable securities, current | 107,665 | 96,442
Marketable securities, non-current | 81,433 | 62,022
Level 1 |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Restricted cash | 5,788 | 5,794
Total | 293,345 | 271,989
Level 1 | Money Market Fund |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 98,459 | 106,234
Level 1 | US Treasuries |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents |  | 1,497
Marketable securities, current | 107,665 | 96,442
Marketable securities, non-current | 81,433 | 62,022
Level 2 |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Total | 685,641 | 582,108
Level 2 | US government agencies |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 2,977 | 9,925
Marketable securities, current | 82,116 | 42,068
Marketable securities, non-current | 140,776 | 135,749
Level 2 | Commercial Paper |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 5,974 |
Marketable securities, current | 10,684 | 15,851
Level 2 | Corporate Bonds |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Marketable securities, current | 192,268 | 214,127
Marketable securities, non-current | $ 250,846 | $ 164,388

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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