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EQUITY INCENTIVE PLAN (Tables) | 3 Months Ended
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Mar. 31, 2024
EQUITY INCENTIVE PLAN [Abstract] |
Summary of stock option activity | The following table summarizes stock option activity under our plans during the three months ended March 31, 2024:
​ | ​ | ​ | ​ | ​ | ​
​ |  | Number of |  | Weighted-Average
​ | ​ | Options | ​ | Exercise Price
Outstanding at January 1, 2024 |  | 232,744 | ​ | $ | 46.56
Granted |  | 362 | ​ |  | 6.52
Forfeited |  | (2,966) | ​ |  | 18.07
Outstanding at March 31, 2024 |  | 230,140 | ​ | $ | 46.87
Exercisable at March 31, 2024 |  | 169,631 | ​ | $ | 52.61

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