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Fair Value Measurements and Available for Sale Investments (Tables) | 6 Months Ended
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Jun. 30, 2024
Fair Value Measurements And Available For Sale Investments [Abstract] |
Schedule of Assets Measured at Fair Value on Recurring Basis | The following table presents the hierarchy for assets measured at fair value on a recurring basis as of June 30, 2024 and December 31, 2023 (in thousands):
| Fair Value Measurements at End of Period Using:
| Total Fair Value |  | Quoted Market Prices for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
As of June 30, 2024 |  |  |  |  |  |  |
Money market funds | $ | 67,282 |  |  | $ | 67,282 |  |  | $ | — |  |  | $ | — |
U.S. Treasury and agency securities | 50,404 |  |  | 50,404 |  |  | — |  |  | — |
Commercial paper | 209,973 |  |  | — |  |  | 209,973 |  |  | — |
Corporate debt securities | 24,501 |  |  | — |  |  | 24,501 |  |  | — |
As of December 31, 2023 |  |  |  |  |  |  |
Money market funds | $ | 25,222 |  |  | $ | 25,222 |  |  | $ | — |  |  | $ | — |
U.S. Treasury and agency securities | 92,309 |  |  | 92,309 |  |  | — |  |  | — |
Commercial paper | 168,534 |  |  | — |  |  | 168,534 |  |  | — |
Corporate debt securities | 3,473 |  |  | — |  |  | 3,473 |  |  | — |
Schedule of Available for Sale Investments by Security Type | The aggregate market value, cost basis, and gross unrealized gains and losses of available-for-sale investments by security type, classified in marketable securities and long-term investments as of June 30, 2024 and December 31, 2023 are as follows (in thousands):
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Total Fair Value
As of June 30, 2024 |  |  |  |  |  |  |
U.S. Treasury and agency securities | $ | 36,616 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 36,619 |
Corporate debt securities | 24,524 |  |  | — |  |  | (24) |  |  | 24,500 |
Commercial paper | 206,588 |  |  | 6 |  |  | (102) |  |  | 206,492 |
Total marketable securities | $ | 267,728 |  |  | $ | 9 |  |  | $ | (126) |  |  | $ | 267,611 |
Number of securities with unrealized losses |  |  |  |  | 31 |  |  |
As of December 31, 2023 |  |  |  |  |  |  |
U.S. Treasury and agency securities | $ | 92,294 |  |  | $ | 20 |  |  | $ | (5) |  |  | $ | 92,309 |
Corporate debt securities | 3,467 |  |  | 6 |  |  | — |  |  | 3,473 |
Commercial paper | 168,488 |  |  | 76 |  |  | (30) |  |  | 168,534 |
Total marketable securities | $ | 264,249 |  |  | $ | 102 |  |  | $ | (35) |  |  | $ | 264,316 |
Number of securities with unrealized losses |  |  |  |  | 12 |  |  |
Schedule of Contractual Maturities of Available for Sale Debt Securities | Contractual maturities of available-for-sale debt securities, as of June 30, 2024, were as follows (in thousands):
| Estimated Fair Value
Less than one year | $ | 267,611 |
Greater than one year | — |
Total | $ | 267,611 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class 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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