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Debt and Warrants Transactions | 6 Months Ended
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Jun. 30, 2023
Debt Disclosure [Abstract] |
Debt and Warrants Transactions | Debt and Warrants Transactions 2022 Notes and Warrants Offering On August 11, 2022, the Company entered into a Securities Purchase Agreement ("SPA") with certain accredited investors, and, pursuant to the SPA, sold a new series of senior secured convertible notes (the "Notes") with an aggregate original principal amount of $15.0 million and an initial conversion price of $3.35 per share, subject to adjustment as described in the Notes, and warrants to acquire up to an aggregate amount of 2,238,806 additional shares of the Company’s common stock (the "Warrants" and together with the Notes, the "Notes and Warrants Offering"). The Warrants are exercisable at a price of $3.35 per share and expire five years from the date of issuance on August 11, 2027. There is no established public trading market for the Warrants and the Company does not intend to list the Warrants on any national securities exchange or nationally recognized trading system. The closing of the Notes and Warrants Offering occurred on August 11, 2022. The Notes accrue compounding interest at the rate of 6.0% per annum, which is payable in cash or shares of the Company's common stock at the Company's option, in arrears in accordance with the terms of the Notes. Upon the occurrence and during the continuance of an Event of Default (as defined in the Notes), the Notes will accrue interest at the rate of 15.0% per annum. Upon conversion and other designated events, holders of the Notes are also entitled to receive an interest make-whole payment. Upon a redemption due to a Change in Control (as defined in the Notes), holders of the Notes are entitled to cash settlement. The Notes mature on December 31, 2023, with amortization payments due monthly by the first business day of the month from April 2023 through December 2023, and the balance at maturity. There were principal installment payments of $6.0 million made during the six months ended June 30, 2023 as described in Note 3 above, and as such a portion of the debt and related derivative were derecognized. The Warrants were assessed and concluded to be liability instruments due to cash settlement provisions, and as a result all changes in the fair value of warrants will be recognized in the Company's consolidated statements of operations until they are either exercised or expire. The Warrants are not traded in an active securities market and, as such, the estimated fair value at inception was $3.8 million, determined utilizing a Black-Scholes option pricing model and is reflected on the balance sheet line "Warrant liabilities" and as a discount on the Notes. The Notes contain a make-whole feature and a redemption right payable in cash upon change in control feature, as well as certain other conversion and redemption features. These features are viewed as a compound embedded derivative that meets the criteria to be bifurcated and carried at fair value. This is classified in the balance sheet line as "Derivative liabilities" and as a discount on the Notes, with subsequent adjustments to fair value each reporting period with a charge to earnings. The derivative was initially recognized at a fair value of $4.2 million and is subsequently adjusted to fair value quarterly, as required, and immediately prior to any change in underlying debt balance. The change in valuation of the debt instrument as a whole, including the derivative, as a result of installment payments extinguishing an aggregate of $6.0 million in principal under the Notes, is reflected in the statement of operations line "Loss on derecognition of debt" totaling $0.8 million for the three months ended June 30, 2023 and $1.4 million for the six months ended June 30, 2023. Below are specific assumptions utilized:
Convertible Notes Derivative | March 31, 2023 |  | May 1, 2023 |  | May 31, 2023 |  | June 30, 2023 |  |  |
Common stock market price | $ | 1.16 |  |  | $ | 1.22 |  |  | $ | 1.21 |  |  | $ | 1.11 |  |  |  |
Risk-free interest rate | 4.68 | % |  | 4.68 | % |  | 4.91 | % |  | 5.42 | % |  |  |
Expected dividend yield | — |  |  | — |  |  | — |  |  | — |  |  |  |
Expected term (in years) | 0.75 |  |  | 0.67 |  |  | 0.59 |  |  | 0.50 |  |  |  |
Expected volatility | 84.34 | % |  | 81.57 | % |  | 86.20 | % |  | 90.68 | % |  |  |
During the three months ended June 30, 2023, the Company recognized interest expense of $2.1 million on the Notes and related instruments utilizing the effective interest rate of 155%, which includes amortization of debt issuance costs of $0.1 million, amortization of discount of $1.8 million, and contractual interest of $0.2 million. During the six months ended June 30, 2023 the Company recognized interest expense of $4.5 million on the Notes and related instruments utilizing the effective interest rate of 155%, which includes amortization of debt issuance costs of $0.2 million, amortization of discount of $3.8 million, and contractual interest of $0.4 million. The current balance of the Notes as of June 30, 2023 is as follows (unaudited, in thousands):
| Current |  |  |  |
Gross Balance as of June 30, 2023 | $ | 9,000 |  |  |  |  |
Unamortized Discount | (1,829) |  |  |  |  |
Unamortized Issuance Costs | (109) |  |  |  |  |
Net Balance as of June 30, 2023 | $ | 7,062 |  |  |  |  |
The Notes contain certain customary affirmative and negative covenants regarding the incurrence of indebtedness, acquisition and investment transactions, the existence of liens, the repayment of indebtedness, the payment of cash in respect of dividends, distributions or redemptions, and the transfer of assets, among other matters. As of June 30, 2023, the Company was in compliance with all covenants. Warrant Liabilities As further discussed above, on August 11, 2022, warrants to purchase 2,238,806 shares of common stock were issued with an exercise price of $3.35 per share in conjunction with the Notes and Warrants Offering, at an initial fair value of $3.8 million. As further discussed in Note 3, Additional Warrants to purchase 1,132,075 shares of common stock were issued with an exercise price of $2.65 per share in conjunction with the Stock and Additional Warrants Offering. All changes in the fair value of these warrant liabilities are recognized in the Company's consolidated statements of operations until they are either exercised or expire. Since issuance of the warrants, there have been no warrant exercises. The warrants are not traded in an active securities market and, as such, the estimated fair value was determined by using a Black-Scholes option pricing model that utilizes assumptions noted in the following table. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant. Expected volatility is based on the historical volatility over the expected term of the warrants. The Company has no reason to believe future volatility over the expected remaining life of the warrants is likely to differ materially from historical volatility. Expected life is based on the contractual term of the warrants. Below are the specific assumptions utilized:
Warrants |  |  |  |  |  |  | June 30, 2023
Common stock market price |  |  |  |  |  |  | $ | 1.11 |
Risk-free interest rate |  |  |  |  |  |  | 3.95 | %
Expected dividend yield |  |  |  |  |  |  | — |
Expected term (in years) |  |  |  |  |  |  | 4.12 |
Expected volatility |  |  |  |  |  |  | 68.72 | %
Additional Warrants |  |  |  |  |  |  | June 30, 2023
Common stock market price |  |  |  |  |  |  | $ | 1.11 |
Risk-free interest rate |  |  |  |  |  |  | 3.95 | %
Expected dividend yield |  |  |  |  |  |  | — |
Expected term (in years) |  |  |  |  |  |  | 4.62 |
Expected volatility |  |  |  |  |  |  | 68.17 | %

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 470 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//470/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1C -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1I -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1I -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1I -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I + Details
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