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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2024
Fair Value Disclosures [Abstract] |
Assets and Liabilities Measured at Fair Value on Recurring Basis | Assets and liabilities measured at fair value on a recurring basis included the following as of September 30, 2024 (in thousands):
|  | Using |  |  |  |
|  |  |  |  | Significant |  |  |  |  |  |  |
|  | Quoted Prices |  |  | Other |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  | Unobservable |  |  | Total Fair |
|  | Markets |  |  | Inputs |  |  | Inputs |  |  | Value as of |
|  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | September 30, 2024 |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 230,421 |  |  | $ | — |  |  | $ | — |  |  | $ | 230,421 |
Long-term investment: |  |  |  |  |  |  |  |  |  |  |  |
Failed Auction Security |  |  | — |  |  |  | — |  |  |  | 2,640 |  |  |  | 2,640 |
Assets and liabilities measured at fair value on a recurring basis included the following as of December 31, 2023 (in thousands):
|  | Using |  |  |  |
|  |  |  |  | Significant |  |  |  |  |  |  |
|  | Quoted Prices |  |  | Other |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  | Unobservable |  |  | Total Fair |
|  | Markets |  |  | Inputs |  |  | Inputs |  |  | Value as of |
|  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | December 31, 2023 |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 209,489 |  |  | $ | — |  |  | $ | — |  |  | $ | 209,489 |
Long-term investment: |  |  |  |  |  |  |  |  |  |  |  |
Failed Auction Security |  |  | — |  |  |  | — |  |  |  | 2,530 |  |  |  | 2,530 |
Change in Estimated Fair Values Calculated for Investment Valued on Recurring Basis Utilizing Level 3 Inputs | The change in the estimated fair value calculated for the investment valued on a recurring basis utilizing Level 3 inputs (i.e., the Failed Auction Security) for the nine months ended September 30, 2024 was as follows (in thousands):
Balance at the beginning of the period |  | $ | 2,530 |
Gain included in Other comprehensive loss |  |  | 110 |
Balance at the end of the period |  | $ | 2,640 |

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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/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 2: 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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- Definition Fair Value Of Assets And Liabilities Measured On Recurring Basis Table [Text Block] + References No definition available. + Details
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