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Derivative Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Changes in Fair Value of Derivative Liability | Changes in the fair value of recurring measurements included in Level 3 of the fair value hierarchy are presented as other income, net in our condensed statements of operations and comprehensive loss and were as follows for the six months ended June 30, 2023 and 2022 (in thousands):
| 2023 |  | 2022
Balance at January 1, | $ | 1,656 |  |  | $ | 698 |
2022 Exit Fee addition at fair value | — |  |  | 375 |
Changes in estimated fair value: |  |  |
2018 Exit Fee | 78 |  |  | (29) |
2022 Exit Fee | 3 |  |  | 47 |
Balance at June 30, | $ | 1,737 |  |  | $ | 1,091 |

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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 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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