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Investments (Tables) | 9 Months Ended
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Sep. 30, 2025
Investments, All Other Investments [Abstract] |
Investments Measured at Fair Value on Recurring Basis | The following tables summarize, by major security type, our short-term investments that are measured at fair value on a recurring basis, in thousands:
|  |  | September 30, 2025 |
| Maturities (years) |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | 1 or less |  | $ | 39,180 |  |  | $ | — |  |  | $ | — |  |  | $ | 39,180 |
U.S. Treasury securities | 1 or less |  |  | 7,460 |  |  |  | — |  |  |  | — |  |  |  | 7,460 |
Total cash equivalents |  |  |  | 46,640 |  |  |  | — |  |  |  | — |  |  |  | 46,640 |
Short-term investments |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | 2 or less |  |  | 420,960 |  |  |  | 915 |  |  |  | (1 | ) |  |  | 421,874 |
U.S. Agency bonds | 3 or less |  |  | 32,500 |  |  |  | 9 |  |  |  | (5 | ) |  |  | 32,504 |
Total short-term investments |  |  |  | 453,460 |  |  |  | 924 |  |  |  | (6 | ) |  |  | 454,378 |
Total |  |  | $ | 500,100 |  |  | $ | 924 |  |  | $ | (6 | ) |  | $ | 501,018 |
|  |  | December 31, 2024 |
| Maturities (years) |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | 1 or less |  | $ | 200,024 |  |  | $ | — |  |  | $ | — |  |  | $ | 200,024 |
Short-term investments |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | 3 or less |  |  | 497,172 |  |  |  | 766 |  |  |  | — |  |  |  | 497,938 |
U.S. Agency bonds | 3 or less |  |  | 4,997 |  |  |  | — |  |  |  | (2 | ) |  |  | 4,995 |
Total short-term investments |  |  |  | 502,169 |  |  |  | 766 |  |  |  | (2 | ) |  |  | 502,933 |
Total |  |  | $ | 702,193 |  |  | $ | 766 |  |  | $ | (2 | ) |  | $ | 702,957 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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