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Loans and Convertible Notes Payable (Tables) | 9 Months Ended
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Sep. 30, 2021
Debt Disclosure [Abstract] |
Summary of Loans and Convertible Notes Payable |
|  | September 30, 2021 |  |  | December 31, 2020 |
|  | Gross |  |  | Discount |  |  | Net |  |  | Gross |  |  | Discount |  |  | Net |
Loan - Avenue [1] |  | $ | 12,638 |  |  | $ | (1,804 | ) |  | $ | 10,834 |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Convertible Note Payable - Rosalind |  | $ | 2,000 |  |  | $ | — |  |  | $ | 2,000 |  |  | $ | 2,000 |  |  | $ | — |  |  | $ | 2,000 |
Convertible Loan Payable - Avenue |  |  | 3,000 |  |  |  | (398 | ) |  |  | 2,602 |  |  |  | — |  |  |  | — |  |  |  | — |
|  | $ | 5,000 |  |  | $ | (398 | ) |  | $ | 4,602 |  |  | $ | 2,000 |  |  | $ | — |  |  | $ | 2,000 |
[1] The gross amount includes the 4.25% final payment of $637.5. |
Summary of Remaining Maturities of Company's Loan and Convertible Note Payables |
Remaining maturities of the Company's loan and convertible note payables are as follows: |
|  | Loans |  |  | Convertible Notes |  |  | Total |
Year ended December 31, 2021 |  | $ | - |  |  | $ | - |  |  | $ | - |
Year ended December 31, 2022 |  |  | 571 |  |  |  | 143 |  |  |  | 714 |
Year ended December 31, 2023 |  |  | 6,857 |  |  |  | 1,714 |  |  |  | 8,571 |
Year ended December 31, 2024 |  |  | 5,210 |  |  |  | 3,143 |  |  |  | 8,353 |
Total |  | $ | 12,638 |  |  | $ | 5,000 |  |  | $ | 17,638 |
Summary of Avenue Warrant Valued Using the Black-Scholes Option Pricing Method | The Avenue Warrant was valued at issuance at $1,309 using the Black-Scholes option pricing method using the following assumptions:
|  | August 6, |
|  | 2021 |
Contractual term (years) |  | 5.07 |
Expected volatility |  | 187.0% |
Risk-free interest rate |  | 0.77% |
Expected dividends |  | 0.00% |
The Company values stock options using the Black-Scholes option pricing model and used the following assumptions during the reporting periods:
|  | Three months ended September 30, |  | Nine months ended September 30,
|  | 2021 |  |  | 2020 |  | 2021 |  |  | 2020
Expected term (years) |  | 5.1 - 6.3 |  |  | N.A. |  | 5.1 - 6.3 |  |  | N.A.
Expected volatility |  | 179.2% - 181.3% |  |  | N.A. |  | 178.3% - 181.3% |  |  | N.A.
Risk-free interest rate |  | 0.74% - 1.10% |  |  | N.A. |  | 0.74% - 1.10% |  |  | N.A.
Expected dividends |  | 0.00% |  |  | N.A. |  | 0.00% |  |  | N.A.
Summary of Various Notes Issued |
|  | Conversion price |  |  | Current interest rate |  |  | Principal |
Convertible notes payable |  |  |  |  |  |  |  |  |  |  |  |
July 2019 Notes - Rosalind (maturity date - October 30, 2024)1 |  | $ | 1,198 |  |  | 8.00% |  |  | $ | 2,000 |
August 2021 Note - Avenue (maturity date - August 1, 2024) |  | $ | 12 |  |  | 10.95% |  |  | $ | 3,000 |

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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