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Fair Value Measurements | 3 Months Ended
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Mar. 31, 2024
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements The Company’s only financial instrument measured at fair value on a recurring basis is its interest make-whole payment derivative liability on its 2025 Notes (see Note 4 – Debt). The fair value of that liability was zero as of both March 31, 2024 and December 31, 2023. The fair value of the interest make-whole payment derivative liability was determined using a Monte Carlo model using the following key assumptions:
| March 31, 2024 |  | December 31, 2023 |  |  |  |
Volatility | 88.60 | % |  | 77.00 | % |  |  |  |
Stock price | $2.80 per share |  | $2.20 per share |  |  |  |
Credit spread | 85.09 | % |  | 92.20 | % |  |  |  |
Term | 1.09 years |  | 1.34 years |  |  |  |
Dividend yield | — | % |  | — | % |  |  |  |
Risk-free rate | 4.99 | % |  | 4.60 | % |  |  |  |
There was no change in the fair value of the interest make-whole liability for the three months ended March 31, 2024 or March 31, 2023. Other Financial Instruments The carrying values of the Company’s other financial assets and liabilities approximate their fair values because of their short-term nature, with the exception of the 2025 Notes. The 2025 Notes are carried at amortized cost, adjusted for changes in the fair value of the embedded derivative.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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