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Fair Value Measurement of Assets and Liabilities | 9 Months Ended
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Sep. 30, 2023
Fair Value Disclosures [Abstract] |
Fair Value Measurement of Assets and Liabilities | Fair Value Measurement of Assets and Liabilities Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or liability. Each fair value measurement is classified into one of the following levels based on the information used in the valuation: Level 1: Observable inputs such as quoted prices in active markets. Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly. Level 3: The fair market value for level 3 securities may be highly sensitive to the use of unobservable inputs and subjective assumptions. Generally, changes in significant unobservable inputs may result in significantly lower or higher fair value measurements. The Company’s financial instruments measured at fair value were $0 and less than $0.1 million as of September 30, 2023 and December 31, 2022 respectively. The fair value of the interest make-whole payment derivative liability was determined using a Monte Carlo model using the following key assumptions:
| September 30, 2023 |  | December 31, 2022 |  |  |  |
Volatility | 68 | % |  | 50 | % |  |  |  |
Stock price | $0.42 per share |  | $0.84 per share |  |  |  |
Credit spread | 41.61 | % |  | 56.52 | % |  |  |  |
Term | 1.59 years |  | 2.34 years |  |  |  |
Dividend yield | — | % |  | — | % |  |  |  |
Risk-free rate | 5.21 | % |  | 4.35 | % |  |  |  |
There was no material change in the fair value of the interest make-whole liability for both the three and nine months ended September 30, 2023. For the three and nine months ended September 30, 2022, the Company recorded no gain or loss and a $0.9 million gain, respectively, as a result of the change in the fair value of the interest make-whole liability. The Company reviews the fair value hierarchy classification of its financial instruments measured at fair value each reporting period. Changes in the observability of valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy. There have been no transfers of assets or liabilities between fair value measurement classifications during the nine months ended September 30, 2023 or 2022. 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 3.25% convertible senior notes due 2025 (the “2025 Notes”, see “Note 4, Debt”). 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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