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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2022
Fair Value Disclosures [Abstract] |
Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis | The following tables set forth the fair value of financial assets as of March 31, 2022 and December 31, 2021 that were measured at fair value on a recurring basis (in thousands):
|  | March 31, 2022 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 92,096 |  |  | $ | — |  |  | $ | — |  |  | $ | 92,096 |
U.S. government debt securities |  |  | — |  |  |  | 358,291 |  |  |  | — |  |  |  | 358,291 |
Corporate bonds |  |  | — |  |  |  | 39,573 |  |  |  | — |  |  |  | 39,573 |
Total financial assets |  | $ | 92,096 |  |  | $ | 397,864 |  |  | $ | — |  |  | $ | 489,960 |
|  | December 31, 2021 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 131,946 |  |  | $ | — |  |  | $ | — |  |  | $ | 131,946 |
U.S. government debt securities |  |  | — |  |  |  | 391,145 |  |  |  | — |  |  |  | 391,145 |
Corporate bonds |  |  | — |  |  |  | 39,996 |  |  |  | — |  |  |  | 39,996 |
Total financial assets |  | $ | 131,946 |  |  | $ | 431,141 |  |  | $ | — |  |  | $ | 563,087 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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