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Stockholders’ Equity (Tables) | 9 Months Ended
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Sep. 30, 2023
Equity [Abstract] |
Schedule of Changes in Stockholders' Equity | The following are changes in stockholders’ equity for the nine months ended September 30, 2022 and 2023: Schedule of Changes in Stockholders' Equity
|  | Shares |  |  | Amount |  |  | Capital |  |  | (Deficit) |  |  | Total |
|  |  |  |  |  |  |  | Additional |  |  |  |  |  |  |
|  | Common Stock |  |  | paid in |  |  | Accumulated |  |  |  |
|  | Shares |  |  | Amount |  |  | Capital |  |  | (Deficit) |  |  | Total |
Balance December 31, 2021 |  |  | 12,905,112 |  |  | $ | - |  |  | $ | 60,341,000 |  |  | $ | (51,838,000 | ) |  | $ | 8,503,000 |
Shares issued for warrant exercise |  |  | 986 |  |  |  | - |  |  |  | 5,000 |  |  |  | - |  |  |  | 5,000 |
Equity-based compensation |  |  | 5,000 |  |  |  | - |  |  |  | 211,000 |  |  |  | - |  |  |  | 211,000 |
Cash settlement of equity-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of stock and options for services |  |  | 23,643 |  |  |  | - |  |  |  | 173,000 |  |  |  | - |  |  |  | 173,000 |
Net loss |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (4,276,000 | ) |  |  | (4,276,000 | )
Balance September 30, 2022 |  |  | 12,934,741 |  |  | $ | - |  |  | $ | 60,730,000 |  |  | $ | (56,114,000 | ) |  | $ | 4,616,000 |
|  |  |  |  |  |  |  | Additional |  |  |  |  |  |  |
|  | Common Stock |  |  | paid in |  |  | Accumulated |  |  |  |
|  | Shares |  |  | Amount |  |  | Capital |  |  | (Deficit) |  |  | Total |
Balance December 31, 2022 |  |  | 12,934,741 |  |  | $ | - |  |  | $ | 60,905,000 |  |  | $ | (57,972,000 | ) |  | $ | 2,933,000 |
Balance |  |  | 12,934,741 |  |  | $ | - |  |  | $ | 60,905,000 |  |  | $ | (57,972,000 | ) |  | $ | 2,933,000 |
Equity-based compensation |  |  | 165,779 |  |  |  | - |  |  |  | 496,000 |  |  |  | - |  |  |  | 496,000 |
Cash settlement of equity-based compensation |  |  | - |  |  |  | - |  |  |  | (24,000 | ) |  |  | - |  |  |  | (24,000 | )
Issuance of stock and options for services |  |  | 4,094 |  |  |  | - |  |  |  | 11,000 |  |  |  | - |  |  |  | 11,000 |
Net loss |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (2,123,000 | ) |  |  | (2,123,000 | )
Balance September 30, 2023 |  |  | 13,104,614 |  |  | $ | - |  |  | $ | 61,388,000 |  |  | $ | (60,095,000 | ) |  | $ | 1,293,000 |
Balance |  |  | 13,104,614 |  |  | $ | - |  |  | $ | 61,388,000 |  |  | $ | (60,095,000 | ) |  | $ | 1,293,000 |
Summary of Stock Options Activity | The following is a summary of stock option activity for the nine months ended September 30, 2023: Summary of Stock Options Activity
|  | Number of Options |  |  | Weighted average exercise price per share |  |  | Remaining term in years |
Outstanding on December 31, 2022 |  |  | 682,939 |  |  | $ | 7.30 |  |  |  | 3.2 |
Issued |  |  | 63,545 |  |  | $ | 1.50 |  |  |  | 8.0 |
Cancelled/expired |  |  | (109,388 | ) |  | $ | 8.48 |  |  |  |  |
Outstanding on September 30, 2023 |  |  | 637,096 |  |  | $ | 6.54 |  |  |  | 3.6 |
Exercisable, September 30, 2023 |  |  | 576,393 |  |  | $ | 6.75 |  |  |  | 3.2 |
Summary of Fair Value of Options Using Black-Sholes Option Pricing Model | The fair value of the options issued was calculated using the Black-Scholes option pricing model, based on the following: Summary of Fair Value of Options Using Black-Sholes Option Pricing Model
|  | 2023 |
Expected term (in years) |  |  | 8.0 |
Expected volatility |  |  | 84.4 | %
Risk-free interest rate |  |  | 3.6 | %
Expected dividends |  | $ | - |
Weighted average grant date fair value per share |  | $ | 1.19 |
Summary of Restricted Stock Award and Restricted Stock Unit Activity | The following is a summary of restricted stock award and restricted stock unit activity for the nine months ended September 30, 2023: Summary of Restricted Stock Award and Restricted Stock Unit Activity
|  | Number of shares |  |  | Weighted average grant date fair value |
Unvested at January 1, 2023 |  |  | 41,923 |  |  | $ | 4.92 |
Granted |  |  | 5,000 |  |  | $ | 1.25 |
Vested |  |  | (4,386 | ) |  | $ | 5.06 |
Forfeited |  |  | (9,931 | ) |  | $ | 3.33 |
Unvested at September 30, 2023 |  |  | 32,606 |  |  | $ | 4.82 |
Summary of Performance Stock Unit Activity | The following table summarizes the activity for the Company’s unvested PSUs for the nine months ended September 30, 2023: Summary of Performance Stock Unit Activity
|  | Number of shares |  |  | Weighted average grant date fair value |
Unvested at January 1, 2023 |  |  | 17,678 |  |  | $ | 4.50 |
Cash settled |  |  | (17,678 | ) |  | $ | 4.50 |
Granted |  |  | 357,689 |  |  | $ | 1.64 |
Vested |  |  | (45,251 | ) |  | $ | 1.36 |
Unvested at September 30, 2023 |  |  | 312,438 |  |  | $ | 1.68 |

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