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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2022
Fair Value Disclosures [Abstract] |
Fair Values of Financial Assets Measured on Recurring Basis | The fair values of the Company’s financial assets that are measured on a recurring basis are as follows (in thousands):
|  | March 31, 2022 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Money market funds |  | $ | 16,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,466 |
Corporate bonds |  |  | — |  |  |  | 146,273 |  |  |  | — |  |  |  | 146,273 |
Commercial paper |  |  | — |  |  |  | 54,351 |  |  |  | — |  |  |  | 54,351 |
U.S. government bonds |  |  | 98,376 |  |  |  | — |  |  |  | — |  |  |  | 98,376 |
Agency bonds |  |  | — |  |  |  | 23,018 |  |  |  | — |  |  |  | 23,018 |
Asset-backed securities |  |  | — |  |  |  | 12,660 |  |  |  | — |  |  |  | 12,660 |
Foreign government bonds |  |  | — |  |  |  | 4,983 |  |  |  | — |  |  |  | 4,983 |
Total |  | $ | 114,842 |  |  | $ | 241,285 |  |  | $ | — |  |  | $ | 356,127 |
|  | December 31, 2021 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Money market funds |  | $ | 58,801 |  |  | $ | — |  |  | $ | — |  |  | $ | 58,801 |
Corporate bonds |  |  | — |  |  |  | 182,646 |  |  |  | — |  |  |  | 182,646 |
Commercial paper |  |  | — |  |  |  | 69,079 |  |  |  | — |  |  |  | 69,079 |
U.S. government bonds |  |  | 91,522 |  |  |  | — |  |  |  | — |  |  |  | 91,522 |
Agency bonds |  |  | — |  |  |  | 23,275 |  |  |  | — |  |  |  | 23,275 |
Asset-backed securities |  |  | — |  |  |  | 27,087 |  |  |  | — |  |  |  | 27,087 |
Foreign government bonds |  |  | — |  |  |  | 9,154 |  |  |  | — |  |  |  | 9,154 |
Total |  | $ | 150,323 |  |  | $ | 311,241 |  |  | $ | — |  |  | $ | 461,564 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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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