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EQUITY INCENTIVE PLAN (Tables) | 12 Months Ended
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Dec. 31, 2022
EQUITY INCENTIVE PLAN [Abstract] |
Summary of stock option activity | The following table summarizes stock option activity under our plans during the year ended December 31, 2022:
​ | ​ | ​ | ​ | ​ | ​
​ |  | Number of |  | Weighted-Average
​ | ​ | Options | ​ | Exercise Price
Outstanding at January 1, 2022 |  | 2,635,287 | ​ | $ | 3.38
Granted |  | 1,114,000 | ​ |  | 1.51
Forfeited |  | (67,951) | ​ |  | 2.18
Outstanding at December 31, 2022 |  | 3,681,336 | ​ | $ | 2.84
Exercisable at December 31, 2022 |  | 2,167,604 | ​ | $ | 3.24
​

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