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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2024
Fair Value Disclosures [Abstract] |
Summary of Financial Instruments Carried at Fair Value on Recurring Basis | The following tables present the financial instruments carried at fair value on a recurring basis as of June 30, 2024 and December 31, 2023, respectively, in accordance with the ASC 820, Fair Value Measurement (ASC 820) hierarchy (in thousands):
|  | Fair Value Measurements at June 30, 2024 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 25 |  |  | $ | — |  |  | $ | — |  |  | $ | 25 |
Marketable securities |  | $ | — |  |  | $ | 527,722 |  |  | $ | — |  |  | $ | 527,722 |
|  | Fair Value Measurements at December 31, 2023 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 8,240 |  |  | $ | — |  |  | $ | — |  |  | $ | 8,240 |
Marketable securities |  | $ | — |  |  | $ | 179,408 |  |  | $ | — |  |  | $ | 179,408 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Success fee liability |  | $ | — |  |  | $ | — |  |  | $ | 365 |  |  | $ | 365 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: 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 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 + Details
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