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Debt | 12 Months Ended
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Dec. 31, 2022
Debt Disclosure [Abstract] |
Debt | Debt 2022 Promissory Note On July 6, 2022, we entered into a note purchase agreement and completed the sale of an unsecured promissory note (the "2022 Promissory Note") with an original principal amount of $12,809 in a private placement with the same investor of our 2021 Promissory Note, discussed further below. The 2022 Promissory Note was sold with an original issue discount of $492 and we paid at closing issuance costs totaling $522. After deducting all transaction fees paid by us at closing, net cash proceeds to the Company at closing were $11,795. No interest will accrue on the 2022 Promissory Note unless and until the occurrence of an event of default, as defined in the 2022 Promissory Note. Beginning on November 1, 2022 and on the same day of each month thereafter until the 2022 Promissory Note is paid in full, we are required to make a monthly amortization payments in the amount of $1,566 until the maturity date of July 1, 2023, which is subject to adjustment for any payment deferrals we elect. We have the right to defer any monthly payment by one month up to twelve times so long as certain conditions, as defined in the 2022 Promissory Note, are satisfied. In the event we exercise the deferral right for any given month: (i) the outstanding balance will automatically increase by 1.85%; (ii) we will not be obligated to make the monthly payment for such month; and (iii) the maturity date will be extended for one month. We may prepay any or all outstanding balance of the 2022 Promissory Note earlier than it is due with a prepayment premium of 110%. The prepayment premium also applies to the monthly amortization payments. The effective interest rate of the 2022 Promissory Note is 15.34%. The 2022 Promissory Note had a principal balance of $9,962 and debt discount of $295 as of December 31, 2022. On March 15, 2023, we entered into a waiver agreement with the noteholder. See Note 17 below for further discussion. 2021 Promissory Note In connection with the acquisition of Lyte, we entered into a note purchase agreement and completed the sale of an unsecured promissory note (the "2021 Promissory Note") with an original principal amount of $5,220 in a private placement that closed on October 18, 2021. The promissory note was sold with an original issue discount of $200 and we paid at closing issuance costs totaling $280. After deducting all transaction costs, net cash proceeds to the Company were $4,740. No interest will accrue on the 2021 Promissory Note unless and until the occurrence of an event of default, as defined in the 2021 Promissory Note. We may prepay any or all outstanding balance of the 2021 Promissory Note earlier than it is due with a prepayment premium of 110%. The prepayment premium also applies to the monthly amortization payments, which amounts to an effective interest rate of approximately 18%. Beginning on January 15, 2022 and on the same day of each month thereafter until the promissory note is paid in full, we are required to make a monthly amortization payments in the amount of $574 until the maturity date of October 15, 2022. The 2021 Promissory Note had a principal balance of $5,220 and debt discount $316 as of December 31, 2021. In October 2022, we paid the final payment amount of $574 on the 2021 Promissory Note. 2020 Convertible Notes On July 15, 2020, we issued a Series A Senior Convertible Note (a “Series A Note”) to an institutional investor with an initial principal amount of $4,320 (reflecting an original issue discount of $320) in a private placement. On the same date, we issued a Series B Senior Secured Convertible Note (a “Series B Note,” and together with the Series A Note, the “2020 Convertible Notes”) to the same investor with an initial principal amount of $17,280 (reflecting an original issue discount of $1,280). The investor paid for the Series B Note by delivering a secured promissory note (the “Investor Note”) with an initial principal amount of $16,000. We received cash under the Series B Note only upon cash repayment of the corresponding Investor Note. The investor, at its option and at any time, had the right to voluntarily prepay the Investor Note, in whole or in part. Until the Investor Note was repaid, the principal (and related original issue discount) of the Series B Note was considered to be "restricted." The Series B Note and the Investor Note were subject to the terms of a Master Netting Agreement between us and the investor. Upon repayment of the Investor Note, an equal amount of the Series B Note became "unrestricted" and recorded as debt in our consolidated balance sheets. The Series A Note and outstanding unrestricted principal balance on the Series B Note each bore interest at a rate of 7% per annum and includes a make-whole of interest from the date of issuance through the maturity date of December 31, 2021. The restricted principal of the Series B Note bore interest at a rate of 3% per annum. The 2020 Convertible Notes were scheduled to mature on December 31, 2021. As a result of multiple offerings of sales of shares of our common stock in 2021, the investor elected to require us to use forty percent (40%) of the net proceeds from those offerings to satisfy obligations under the 2020 Convertible Notes. During the first quarter of 2021, we paid approximately $11,507, of which $5,717 was recorded as a loss on extinguishment of debt. We also recorded a loss on extinguishment of debt of $51 related to monthly installment payments made to the investor during the same time period. In March 2021, the investor voluntarily prepaid an aggregate of $10,250 pursuant to the terms of the Investor Note. As a result, we received cash proceeds of $10,250 and this amount of principal of the Series B Note, along with $820 of original issue discount became "unrestricted" and outstanding. On March 25, 2021, we delivered a Company Optional Redemption Notice (as defined in the Series B Note) to the holder of our Series B Note exercising our right to redeem and fully satisfy all obligations under the Series B Note on April 5, 2021. On April 5, 2021, we paid $13,902 in cash to the noteholder of our 2020 Convertible Notes in full satisfaction of all obligations under our Series B Note, which amounted to $11,718 of principal, interest and make-whole and $2,184 for the loss on extinguishment of debt. Warrant In addition to the 2020 Convertible Notes, we issued a warrant exercisable for three (3) years for the purchase, initially, of up to an aggregate of 2,160,000 shares of the Company's common stock at an initial exercise price of $4.00 per share. The number of shares and exercise price are each subject to adjustment provided under the warrant. As a result of our underwritten public offering in February 2021, the exercise price of each share decreased to $2.25 per share, while the number of shares for which the warrant is exercisable increased proportionately such that the total exercise price remained unchanged. In October 2021, we issued shares to the seller of Lyte as purchase consideration at a price of $1.4246 per share, and as a result, the exercise price of the warrant adjusted accordingly and the number of shares exercisable thereunder increased to 2,811,315. If, at the time of exercise of the warrant, there is no effective registration statement registering, or no current prospectus available for, the issuance of the shares, then the warrant may also be exercised, in whole or in part, by means of a “cashless exercise.” The registration statement registering 2,160,000 shares of our common stock issuable pursuant to the terms of the warrant was declared effective by the SEC on October 27, 2020. In February 2022, we filed a registration statement registering an additional 4,200,000 warrant shares. The warrant may not be exercised if, after giving effect to the exercise, the investor would beneficially own amounts in excess of those permissible under the terms of the warrant. As more fully discussed in Note 12, the holder partially exercised its warrant during 2021. The following table sets forth the assumptions used and calculated aggregated fair values of the liability classified warrants:
| December 31, 2022 |  | December 31, 2021
Strike price per share | $ | 1.42 |  |  | $ | 2.25 |
Closing price per share | $ | 0.77 |  |  | $ | 2.63 |
Term (years) | 0.53 |  | 1.53
Volatility | 102 | % |  | 186 | %
Risk-free rate | 4.70 | % |  | 0.56 | %
Dividend Yield | — |  | —
Upon issuance of the warrant, we recorded a warrant liability as a discount to the 2020 Convertible Notes of $2,486. A summary of the change in fair value of the warrant liability is set forth below:
| 2022 |  | 2021
Balance, beginning of year | $ | 3,605 |  |  | $ | 1,614 |
Warrant issued | — |  |  | — |
Warrant Exercised | — |  |  | (16,148) |
Change in fair value of warrant liability | (3,349) |  |  | 18,139 |
Balance, end of year | $ | 256 |  |  | $ | 3,605 |
Participation Rights In addition, the Company granted the 2020 Convertible Notes investor participation rights in future equity and equity-linked offerings of securities, subject to certain limited exceptions, during the two years after the later of (a) the closing or (b) the date the 2020 Convertible Notes no longer remain outstanding, in an amount of up to 30% of the securities being sold in such offerings. Paycheck Protection Program ("PPP") Loan On April 10, 2020, we received loan proceeds in the amount of $2,850 from JPMorgan Chase, N.A. pursuant to the PPP under the Coronavirus Aid, Relief and Economic Security Act (the "CARES Act"), which was enacted on March 27, 2020. The loan, which was in the form of a note dated April 9, 2020, was originally scheduled to mature on April 9, 2022 and bore interest at a rate of 0.98% per annum. The Paycheck Protection Flexibility Act of 2020, extended the deferral period for loan payments to either (i) the date that the U.S. Small Business Administration ("SBA") remits the borrower’s loan forgiveness amount to the lender or (ii) if the borrower does not apply for loan forgiveness, ten months after the end of the borrower’s loan forgiveness covered period. The note may be prepaid by us at any time prior to the maturity with no prepayment penalties. The principal amount of our PPP loan was subject to forgiveness under the PPP. On July 7, 2021, we submitted our request to the SBA to forgive the full principal amount of the loan and on August 16, 2021, we received notification that the SBA approved our PPP loan forgiveness application. We recorded a gain on the forgiveness of the PPP loan and related interest for the year ended December 31, 2021. Promissory Notes In October 2019, our board of directors authorized the issuance of $20,000 of promissory notes (the “Notes”), which may be paid by investors in the form of cash or, in our discretion, cryptocurrency, such as bitcoin or ethereum. The Notes were sold in reliance on an exemption from registration. We may prepay the Notes at any time without penalty. We may not issue Notes under the Purchase Agreement in excess of $20,000, in the aggregate, unless otherwise agreed by the holders of a majority in interest of the principal outstanding under the Notes. Transaction costs related to the issuance of the Notes were immaterial. The Notes bore ordinary interest at a rate of 10% per annum. Interest under the Notes was payable monthly beginning on November 30, 2019. During the term of the Notes, we were required to maintain a restricted bank account with a minimum balance of one year of interest payments on the aggregate principal balance of all Notes, which will be available for use exclusively to satisfy any payments owed by us under the Notes. The principal and unpaid accrued interest on the Notes were due and payable on demand by the majority Note holders on or after the date that is 60 months following November 15, 2019. During 2019, the Company issued a Note in the principal amount of $195, in exchange for cash consideration, to Cane Capital, LLC, an entity owned in part by Alan S. Knitowski, who at the time of issuance of the Note was our Chief Executive Officer and a member of its board of directors. Interest expense recognized for this Note was not significant. On October 27, 2021, we paid $905 in cash to each Note holder in full satisfaction of all obligations under the Notes. Interest Expense The following table sets forth interest expense for our various debt obligations included in the consolidated statements of operations and comprehensive loss:
| Year Ended December 31,
| 2022 |  | 2021
2022 Promissory Note | $ | 903 |  |  | $ | — |
2021 Promissory Note | 318 |  |  | 203 |
2020 Convertible Notes | — |  |  | 1,111 |
Accretion of debt discount - issuance costs | 1,034 |  |  | 1,913 |
Accretion of debt discount - warrants | — |  |  | 1,029 |
All other debt and financing obligations | 151 |  |  | 225 |
Total | $ | 2,406 |  |  | $ | 4,481 |

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