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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2022
Fair Value Disclosures [Abstract] |
Schedule of Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis | The following table summarizes the financial assets and financial liabilities measured at fair value on a recurring basis as of June 30, 2022 and December 31, 2021, and the basis for that measurement, by level within the fair value hierarchy:
|  |  |  | Fair Value Measurement Using: |
Balance Sheet Classification |  | Type of Instrument |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
June 30, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | Money market funds |  | $ | 21,699 |  |  | $ | — |  |  | $ | — |  |  | $ | 21,699 |
Cash equivalents |  | Corporate bonds |  |  | — |  |  |  | 1,999 |  |  |  | — |  |  |  | 1,999 |
Marketable securities |  | U.S. treasury securities |  |  | 19,740 |  |  |  | — |  |  |  | — |  |  |  | 19,740 |
Marketable securities |  | Corporate bonds |  |  | — |  |  |  | 15,395 |  |  |  | — |  |  |  | 15,395 |
Marketable securities |  | Commercial paper |  |  | — |  |  |  | 19,022 |  |  |  | — |  |  |  | 19,022 |
Total assets |  |  |  | $ | 41,439 |  |  | $ | 36,416 |  |  | $ | — |  |  | $ | 77,855 |
|  |  |  | Fair Value Measurement Using: |
Balance Sheet Classification |  | Type of Instrument |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | Money market funds |  | $ | 35,835 |  |  | $ | — |  |  | $ | — |  |  | $ | 35,835 |
Total assets |  |  |  | $ | 35,835 |  |  | $ | — |  |  | $ | — |  |  | $ | 35,835 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan derivative liability |  |  |  | $ | — |  |  | $ | — |  |  | $ | 114 |  |  | $ | 114 |
Total liabilities |  |  |  | $ | — |  |  | $ | — |  |  | $ | 114 |  |  | $ | 114 |
Schedule of Fair Value, Financial Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation | The following table represents a roll-forward of the fair value of Level 3 instruments (significant unobservable inputs):
|  | June 30, 2022 |  |  | December 31, 2021 |
Financial liabilities |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | 114 |  |  | $ | 196 |
Change in fair value of term loan derivative liability |  |  | 147 |  |  |  | (82 | )
Net settlements (see Note 7) |  |  | (261 | ) |  |  | — |
Balance at end of period |  | $ | — |  |  | $ | 114 |

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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + 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 (c) -URI https://asc.fasb.org/extlink&oid=126976982&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 3 -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 + Details
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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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