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Fair Value Measurements, Cash Equivalents and Marketable Securities - Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financial Assets: |  |
Cash equivalents | $ 669,960 | $ 590,026
U.S. government debt securities |  | 314,438
Total financial assets |  | 904,464
Financial Liabilities: |  |
Contingent consideration | 4,770 | 6,050
Total financial liabilities | 4,770 | 6,050
Level 1 |  |
Financial Assets: |  |
Cash equivalents | 564,274 | 57,151
U.S. government debt securities |  | 0
Total financial assets |  | 57,151
Financial Liabilities: |  |
Contingent consideration | 0 | 0
Total financial liabilities | 0 | 0
Level 2 |  |
Financial Assets: |  |
Cash equivalents | 105,686 | 532,875
U.S. government debt securities |  | 314,438
Total financial assets |  | 847,313
Financial Liabilities: |  |
Contingent consideration | 0 | 0
Total financial liabilities | 0 | 0
Level 3 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
U.S. government debt securities |  | 0
Total financial assets |  | 0
Financial Liabilities: |  |
Contingent consideration | 4,770 | 6,050
Total financial liabilities | 4,770 | 6,050
U.S. government debt securities |  |
Financial Assets: |  |
U.S. government debt securities |  | 314,438
U.S. government debt securities | Level 1 |  |
Financial Assets: |  |
U.S. government debt securities |  | 0
U.S. government debt securities | Level 2 |  |
Financial Assets: |  |
U.S. government debt securities |  | 314,438
U.S. government debt securities | Level 3 |  |
Financial Assets: |  |
U.S. government debt securities |  | 0
Money market funds |  |
Financial Assets: |  |
Cash equivalents | 564,274 | 57,151
Money market funds | Level 1 |  |
Financial Assets: |  |
Cash equivalents | 564,274 | 57,151
Money market funds | Level 2 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
Money market funds | Level 3 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
Income deposit funds |  |
Financial Assets: |  |
Cash equivalents | 105,686 | 103,581
Income deposit funds | Level 1 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
Income deposit funds | Level 2 |  |
Financial Assets: |  |
Cash equivalents | 105,686 | 103,581
Income deposit funds | Level 3 |  |
Financial Assets: |  |
Cash equivalents | $ 0 | 0
U.S. government debt securities |  |
Financial Assets: |  |
Cash equivalents |  | 429,294
U.S. government debt securities | Level 1 |  |
Financial Assets: |  |
Cash equivalents |  | 0
U.S. government debt securities | Level 2 |  |
Financial Assets: |  |
Cash equivalents |  | 429,294
U.S. government debt securities | Level 3 |  |
Financial Assets: |  |
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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