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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2022
Fair Value Disclosures [Abstract] |
Schedule of assets and liabilities that are measured at fair value |
|  | March 31, 2022 |
|  | Fair Value |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 16,016 |  |  | $ | 16,016 |  |  | $ | — |  |  | $ | — |
Total cash equivalents |  | $ | 16,016 |  |  | $ | 16,016 |  |  | $ | — |  |  | $ | — |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 249 |  |  | $ | — |  |  | $ | 249 |  |  | $ | — |
Commercial paper |  |  | 548 |  |  |  | — |  |  |  | 548 |  |  |  | — |
Corporate notes |  |  | 7,998 |  |  |  | — |  |  |  | 7,998 |  |  |  | — |
Municipal bonds |  |  | 452 |  |  |  | — |  |  |  | 452 |  |  |  | — |
Total short-term investments |  | $ | 9,247 |  |  | $ | — |  |  | $ | 9,247 |  |  | $ | — |
|  | December 31, 2021 |
|  | Fair Value |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 16,830 |  |  | $ | 16,830 |  |  | $ | — |  |  | $ | — |
Total cash equivalents |  | $ | 16,830 |  |  | $ | 16,830 |  |  | $ | — |  |  | $ | — |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 250 |  |  | $ | — |  |  | $ | 250 |  |  | $ | — |
Commercial paper |  |  | 2,210 |  |  |  | — |  |  |  | 2,210 |  |  |  | — |
Corporate notes |  |  | 12,024 |  |  |  | — |  |  |  | 12,024 |  |  |  | — |
Municipal bonds |  |  | 1,437 |  |  |  | — |  |  |  | 1,437 |  |  |  | — |
Total short-term investments |  | $ | 15,921 |  |  | $ | — |  |  | $ | 15,921 |  |  | $ | — |

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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 https://asc.fasb.org/extlink&oid=126976982&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 https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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