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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2022
Fair Value Disclosures [Abstract] |
Summary of Company's Financial Instruments Measured at Fair Value on a Recurring Basis | The following table summarize the Company’s financial instruments measured at fair value on a recurring basis at March 31, 2022 and December 31, 2021 (in thousands):
|  | Fair Value Measurement at End of Period Using: |
|  |  |  |  | Quoted Prices |  |  |  |  |  |  |
|  |  |  |  | In Active |  |  |  |  |  |  |
|  |  |  |  | Markets |  |  | Significant |  |  |  |
|  |  |  |  | For |  |  | Other |  |  | Significant |
|  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
|  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
As of March 31, 2022: |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds(1) |  | $ | 284,736 |  |  | $ | 284,736 |  |  | $ | — |  |  | $ | — |
Certificates of deposit |  |  | 5,243 |  |  |  | 5,243 |  |  |  | — |  |  |  | — |
U.S. Treasury securities |  |  | 78,665 |  |  |  | 78,665 |  |  |  | — |  |  |  | — |
Total |  | $ | 368,644 |  |  | $ | 368,644 |  |  | $ | — |  |  | $ | — |
As of December 31, 2021: |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds(1) |  | $ | 298,114 |  |  | $ | 298,114 |  |  | $ | — |  |  | $ | — |
Certificates of deposit |  |  | 5,771 |  |  |  | 5,771 |  |  |  | — |  |  |  | — |
U.S. Treasury securities |  |  | 79,724 |  |  |  | 79,724 |  |  |  | — |  |  |  | — |
Total |  | $ | 383,609 |  |  | $ | 383,609 |  |  | $ | — |  |  | $ | — |
(1) Included in cash and cash equivalents on the accompanying balance sheets.

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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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