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Derivative Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Fair Value of Derivative Liabilities | In determining the fair value of the derivative liabilities, the Company used the Black-Scholes option pricing model on December 31, 2020 and 2019:
|  | December 31, 2020 |
Common stock issuable upon exercise of warrants |  |  | 295,000 |
Market value of common stock on measurement date |  | $ | 1.53 |
Exercise price |  | $ | 0.42 |
Risk free interest rate (1) |  |  | 0.13 | %
Expected life in years |  |  | 1 year |
Expected volatility (2) |  |  | 160.03 | %
Expected dividend yields (3) |  |  | 0 | %
|  | December 31, 2019 |
Common stock issuable upon exercise of warrants |  |  | 295,000 |
Market value of common stock on measurement date |  | $ | 1.11 |
Exercise price |  | $ | 1.20 |
Risk free interest rate (1) |  |  | 1.58 | %
Expected life in years |  |  | 2 years |
Expected volatility (2) |  |  | 86.66 | %
Expected dividend yields (3) |  |  | 0 | %
| (1) | The risk-free interest rate was determined by management using the applicable Treasury Bill as of the measurement date.
| (2) | The historical trading volatility was determined by calculating the volatility of the Company’s peers’ common stock.
| (3) | The Company does not expect to pay a dividend in the foreseeable future.
Schedule of Change in Derivative Liabilities | The following table shows the change in the Company’s derivative liabilities rollforward for the years ended December 31, 2020 and 2019 (in thousands):
|  | Amount |
Balance, December 31, 2018 |  | $ | 326 |
Initial valuation of derivative liabilities upon issuance of warrants |  |  | 66 |
Change in fair value of derivative liabilities |  |  | (245 | )
Balance, December 31, 2019 |  | $ | 147 |
|  | Amount |
Balance, December 31, 2019 |  | $ | 147 |
Change in fair value of derivative liabilities |  |  | 216 |
Balance, December 31, 2020 |  | $ | 363 |

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