Note 8 - Convertible Notes	6 Months Ended
Jun. 30, 2024
Notes to Financial Statements
Long-Term Debt [Text Block]	8. Convertible Notes In December 2020, EIP issued the 2020 Notes to predominantly related party investors for proceeds of $5.1 million. In December 2021, EIP issued the 2021 Notes to predominantly related party investors for proceeds of $6.0 million. Upon completion of the Merger in August 2023, all Convertible Notes outstanding were converted into common stock and, in certain cases, pre-funded warrants. As of June 30, 2024 and December 31, 2023, the Convertible Notes were no longer outstanding. Upon issuance, the Company elected the fair value option for the Convertible Notes in accordance with ASC 825, “Financial Instruments,” pursuant to which the entire instrument, including interest expense, is measured at fair value with the initial change in fair value deemed to be a capital contribution and any subsequent changes in fair value being recorded to other income (expense) on the unaudited condensed consolidated statements of operations and comprehensive loss. During the three and six months ended June 30, 2024 there were no fair value adjustments recognized as the Convertible Notes were no longer outstanding. The fair value adjustment recognized in other income (expense) was $(0.2) million and $0.6 million for the three and six months ended June 30, 2023, respectively.

Note 8 - Convertible Notes

6 Months Ended

Jun. 30, 2024

8. Convertible Notes

In December 2020, EIP issued the 2020 Notes to predominantly related party investors for proceeds of $5.1 million. In December 2021, EIP issued the 2021 Notes to predominantly related party investors for proceeds of $6.0 million. Upon completion of the Merger in August 2023, all Convertible Notes outstanding were converted into common stock and, in certain cases, pre-funded warrants. As of June 30, 2024 and December 31, 2023, the Convertible Notes were no longer outstanding. Upon issuance, the Company elected the fair value option for the Convertible Notes in accordance with ASC 825, “Financial Instruments,” pursuant to which the entire instrument, including interest expense, is measured at fair value with the initial change in fair value deemed to be a capital contribution and any subsequent changes in fair value being recorded to other income (expense) on the unaudited condensed consolidated statements of operations and comprehensive loss. During the three and six months ended June 30, 2024 there were no fair value adjustments recognized as the Convertible Notes were no longer outstanding. The fair value adjustment recognized in other income (expense) was $(0.2) million and $0.6 million for the three and six months ended June 30, 2023, respectively.