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Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | $ 110,088 | $ 88,044
Marketable securities | 1,237,048 | 970,883
Digital assets | 30,320 | 0
Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 146,951 | 190,155
Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 399,048 | 228,953
U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 89,226 | 101,060
U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 505,401 | 371,924
Bitcoin exchange traded fund |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 96,422 | 78,791
Money market funds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 6,337 | 1,865
Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 100,985 | 86,179
Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 166 |
U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 2,600 |
Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 6,337 | 1,865
Marketable securities | 96,422 | 78,791
Digital assets | 30,320 |
Level 1 | Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 1 | Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 1 | U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 1 | U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 1 | Bitcoin exchange traded fund |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 96,422 | 78,791
Level 1 | Money market funds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 6,337 | 1,865
Level 1 | Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 | 0
Level 1 | Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
Level 1 | U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
Level 1 | U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 103,751 | 86,179
Marketable securities | 1,140,626 | 892,092
Digital assets | 0 |
Level 2 | Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 146,951 | 190,155
Level 2 | Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 399,048 | 228,953
Level 2 | U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 89,226 | 101,060
Level 2 | U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 505,401 | 371,924
Level 2 | Bitcoin exchange traded fund |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 2 | Money market funds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 | 0
Level 2 | Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 100,985 | 86,179
Level 2 | Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 166 |
Level 2 | U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
Level 2 | U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 2,600 |
Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 | 0
Marketable securities | 0 | 0
Digital assets | 0 |
Level 3 | Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 3 | Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 3 | U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 3 | U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 3 | Bitcoin exchange traded fund |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Marketable securities | 0 | 0
Level 3 | Money market funds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 | 0
Level 3 | Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 | $ 0
Level 3 | Corporate bonds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
Level 3 | U.S. agency securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | 0 |
Level 3 | U.S. treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash equivalents | $ 0 |

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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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