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EQUITY INCENTIVE PLAN (Tables) | 12 Months Ended
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Dec. 31, 2023
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, 2023:
​ | ​ | ​ | ​ | ​ | ​
​ |  | Number of |  | Weighted-Average
​ | ​ | Options | ​ | Exercise Price
Outstanding at January 1, 2023 |  | 184,067 | ​ | $ | 56.75
Granted |  | 58,780 | ​ |  | 12.12
Forfeited |  | (10,103) | ​ |  | 24.02
Outstanding at December 31, 2023 |  | 232,744 | ​ | $ | 46.56
Exercisable at December 31, 2023 |  | 151,479 | ​ | $ | 56.06
​

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