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FAIR VALUE MEASUREMENTS | 12 Months Ended
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Dec. 31, 2023
Fair Value Disclosures [Abstract] |
FAIR VALUE MEASUREMENTS | FAIR VALUE MEASUREMENTS The applicable accounting guidance establishes a framework for measuring fair value and requires disclosure about the fair value measurements of assets and liabilities. This guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. This guidance requires the Company to classify and disclose assets and liabilities measured at fair value on a recurring basis, as well as fair value measurements of assets and liabilities measured on a nonrecurring basis in periods subsequent to initial measurement, in a three-tier fair value hierarchy as follows: •Level 1 - Observable inputs that reflect quoted prices for identical assets or liabilities in active markets. •Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. •Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The carrying value of the Company’s financial instruments, including cash equivalents, accounts receivable, accounts payable and accrued liabilities, approximate fair value due to their short maturities. The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis based on the three-tier fair value hierarchy:
| December 31, 2023 |  | December 31, 2022
(in thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | $ | 23,683 |  |  | $ | — |  |  | $ | — |  |  | $ | 23,683 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Prepaid and other current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative assets | $ | — |  |  | $ | 194 |  |  | $ | — |  |  | $ | 194 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Total assets | $ | 23,683 |  |  | $ | 194 |  |  | $ | — |  |  | $ | 23,877 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Accrued and other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities | $ | — |  |  | $ | 384 |  |  | $ | — |  |  | $ | 384 |  |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 33 |
Total liabilities | $ | — |  |  | $ | 384 |  |  | $ | — |  |  | $ | 384 |  |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 33 |
The Company's financial instruments not measured at fair value on a recurring basis were as follows:
| December 31, 2023 |  | December 31, 2022
| Carrying |  | Fair Value |  | Carrying |  | Fair Value
(in thousands) | Value |  | Level 1 | Level 2 | Level 3 |  | Value |  | Level 1 | Level 2 | Level 3
2024 Notes | $ | 114,880 |  |  | $ | — |  | $ | 177,405 |  | $ | — |  |  | $ | 113,981 |  |  | $ | — |  | $ | 181,139 |  | $ | — |
French and other loans | $ | 15,413 |  |  | $ | — |  | $ | 15,413 |  | $ | — |  |  | $ | 11,161 |  |  | $ | — |  | $ | 11,161 |  | $ | — |
The fair value of the Company’s Notes is influenced by interest rates, the price of the Company’s common stock and stock market volatility. The difference between the carrying value and the fair value is primarily due to the spread between the conversion price and the market value of the shares underlying the conversion as of each respective balance sheet date. The Company’s French and other loans are classified within Level 2 because these borrowings are not actively traded and the majority of them have a variable interest rate structure based upon market rates currently available to the Company for debt with similar terms and maturities; therefore, the carrying value of these debts approximate its fair value. Refer to Note 11, “Convertible Notes and Other Debts,” for additional information. During the years ended December 31, 2023, 2022, and 2021, there were no nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition.

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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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