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Fair Value Measurements - Schedule of Assets Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Restricted cash | $ 5,810 | $ 5,800
Total | 1,545,776 | 1,598,261
Money Market Fund |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 138,403 | 299,067
US government agencies |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Marketable securities, current | 160,226 | 164,618
Marketable securities, non-current | 221,741 | 126,290
Commercial Paper |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents |  | 16,616
Marketable securities, current | 13,628 | 7,155
Corporate Bonds |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents |  | 14,355
Marketable securities, current | 204,391 | 200,750
Marketable securities, non-current | 476,790 | 446,041
US Treasuries |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Marketable securities, current | 128,594 | 160,500
Marketable securities, non-current | 196,193 | 157,069
Level 1 |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Restricted cash | 5,810 | 5,800
Total | 1,076,776 | 622,436
Level 1 | Money Market Fund |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents | 138,403 | 299,067
Level 1 | US Treasuries |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Marketable securities, current | 128,594 | 160,500
Marketable securities, non-current | 196,193 | 157,069
Level 2 |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Total | 469,000 | 975,825
Level 2 | US government agencies |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Marketable securities, current | 160,226 | 164,618
Marketable securities, non-current | 221,741 | 126,290
Level 2 | Commercial Paper |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents |  | 16,616
Marketable securities, current | 13,628 | 7,155
Level 2 | Corporate Bonds |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Cash equivalents |  | 14,355
Marketable securities, current | 204,391 | 200,750
Marketable securities, non-current | $ 476,790 | $ 446,041

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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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