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Fair Value Measurements, Cash Equivalents and Marketable Securities - Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financial Assets: |  |
Cash equivalents | $ 753,037 | $ 590,026
U.S. government debt securities |  | 314,438
Total financial assets |  | 904,464
Financial Liabilities: |  |
Contingent consideration | 6,540 | 6,050
Total financial liabilities | 6,540 | 6,050
Level 1 |  |
Financial Assets: |  |
Cash equivalents | 3,655 | 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 | 749,382 | 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 | 6,540 | 6,050
Total financial liabilities | 6,540 | 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 | 3,655 | 57,151
Money market funds | Level 1 |  |
Financial Assets: |  |
Cash equivalents | 3,655 | 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 | 104,630 | 103,581
Income deposit funds | Level 1 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
Income deposit funds | Level 2 |  |
Financial Assets: |  |
Cash equivalents | 104,630 | 103,581
Income deposit funds | Level 3 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
U.S. government debt securities |  |
Financial Assets: |  |
Cash equivalents | 644,752 | 429,294
U.S. government debt securities | Level 1 |  |
Financial Assets: |  |
Cash equivalents | 0 | 0
U.S. government debt securities | Level 2 |  |
Financial Assets: |  |
Cash equivalents | 644,752 | 429,294
U.S. government debt securities | Level 3 |  |
Financial Assets: |  |
Cash equivalents | $ 0 | $ 0

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- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 3: http://www.xbrl.org/2003/role/disclosureRef -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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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 35 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479613/805-30-35-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479668/805-30-25-6 + Details
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