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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Stock-Based Compensation |
Schedule of assumptions used for estimating fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31, |
​ |  | 2023 |  | 2022 |
Exercise price | ​ | $ | 0.59 | ​ | $ | 0.58-2.61 | ​
Expected dividends | ​ |  | 0 | % | ​ | 0 | %
Expected volatility | ​ |  | 90 | % | ​ | 95 | %
Risk free interest rate | ​ |  | 4.02 | % | ​ | 2.65-3.77 | %
Expected life of option (years) | ​ |  | 4.25 | ​ | ​ | 4.3 | ​
Summary of stock option activity | A summary of stock option activity for the years ended December 31, 2023 and 2022 is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted |  | Weighted Average |  | Aggregate
​ | ​ | ​ | ​ | Average Exercise | ​ | Remaining | ​ | Intrinsic
​ | ​ | Options | ​ | Price | ​ | Contractual Life | ​ | Value
Balance - December 31, 2021 |  | 625,565 | ​ | $ | 16.12 |  | 5.58 years | ​ | $ | —
​ |  |  | ​ |  |  |  |  | ​ |  |
Granted |  | 1,728,000 | ​ | ​ | 0.58 |  |  | ​ |  |
Exercised |  | — | ​ | ​ | — |  |  | ​ | ​ | ​
Expired |  | (43,126) | ​ | ​ | 67.81 |  |  | ​ |  |
Forfeited |  | (14,541) | ​ | ​ | 3.61 |  |  | ​ |  |
Balance - December 31, 2022 |  | 2,295,898 | ​ | ​ | 3.53 |  | 6.44 years | ​ | ​ | —
​ |  |  | ​ |  |  |  |  | ​ |  |
Granted |  | 2,195,000 | ​ | ​ | 0.59 |  |  | ​ |  |
Exercised |  | — | ​ | ​ | — |  |  | ​ | ​ | ​
Expired |  | (104,270) | ​ | ​ | 14.73 |  |  | ​ |  |
Forfeited |  | (10,847) | ​ | ​ | 1.11 |  |  | ​ |  |
​ |  |  | ​ |  |  |  |  | ​ |  |
Balance -December 31, 2023 - outstanding |  | 4,375,781 | ​ | $ | 1.80 |  | 7.70 years | ​ | $ | —
​ |  | ​ | ​ |  |  |  |  | ​ |  |
Balance - December 31, 2023 - exercisable |  | 1,251,477 | ​ | $ | 4.70 |  | 5.05 years | ​ | $ | —
​ |  |  | ​ |  |  |  |  | ​ |  |
Grant date fair value of options granted - December 31, 2023 |  |  | ​ | $ | 873,140 |  |  | ​ |  |
​ |  |  | ​ |  |  |  |  | ​ |  |
Weighted average grant date fair value - December 31, 2023 |  |  | ​ | $ | 0.40 |  |  | ​ |  |
​ |  |  | ​ |  | ​ |  |  | ​ |  |
Grant date fair value of options granted - December 31, 2022 |  |  | ​ | $ | 706,264 |  |  | ​ |  |
​ |  |  | ​ |  |  |  |  | ​ |  |
Weighted average grant date fair value - December 31, 2022 |  |  | ​ | $ | .41 |  |  | ​ |  |
Schedule of outstanding and exercisable options | The options outstanding and exercisable at December 31, 2023 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Options Outstanding | ​ | Options Exercisable
​ | ​ |  | ​ |  | ​ | ​ |  | Weighted |  | ​ |  | ​ | ​ |  | Weighted
​ | ​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | ​ | ​ | Weighted | ​ | Average
​ | ​ | ​ | ​ | ​ | Average | ​ | Remaining | ​ | ​ | ​ | Average | ​ | Remaining
Range of | ​ | ​ | ​ | Exercise | ​ | Contractual | ​ | ​ | ​ | Exercise | ​ | Contractual
Exercise Price | ​ | Options | ​ | Price | ​ | Life | ​ | Options | ​ | Price | ​ | Life
$ | 0.00 – $350.00 |  | 4,372,338 | ​ | $ | 1.20 |  | 8 years |  | 1,248,004 | ​ | $ | 2.62 |  | 5 years
​ | 351.00 – $700.00 |  | 270 | ​ |  | 511.00 |  | 1 years |  | 270 | ​ |  | 511 |  | 1 years
​ | 701.00 – $1000.00 |  | 3,173 | ​ | ​ | 779.83 |  | 2 years |  | 3,173 | ​ | ​ | 779.83 |  | 2 years

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