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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2023
STOCK-BASED COMPENSATION |
Schedule of Common Stock Options |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ |  | Weighted |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​
​ |  | ​ |  | Weighted | ​ | Remaining | ​ | ​ | ​
​ | ​ | Number | ​ | Average | ​ | Contractual | ​ | Aggregate
​ | ​ | of Stock | ​ | Exercise | ​ | Term | ​ | Intrinsic
​ | ​ | Options | ​ | Price | ​ | (in years) | ​ | Value
Options outstanding at January 1, 2023 |  | 3,503,235 | ​ | $ | 2.80 |  |  |  | ​ |
Granted |  | 350,754 | ​ |  | 7.40 |  |  |  | ​ |
Exercised |  | (56,762) | ​ |  | 1.40 |  |  |  | ​ |
Canceled/Forfeited |  | (20,000) | ​ |  | 6.88 |  |  |  | ​ |
Expired |  | (20,000) | ​ |  | 3.22 |  |  |  | ​ |
Options outstanding at December 31, 2023 |  | 3,757,227 | ​ | $ | 3.22 |  | 4.31 | ​ | $ | 10,280,758
Options exercisable at December 31, 2023 |  | 3,059,868 | ​ | $ | 2.27 |  | 3.31 | ​ | $ | 10,221,180
Schedule of compensation expense |
​ | ​ | ​ | ​ | ​ | ​ | ​
(In thousands) | ​ | Year Ended
​ | ​ | December 31,
Compensation Expense | ​ | 2023 | ​ | 2022
Stock options | ​ | $ | 1,517 | ​ | $ | 1,150
Restricted and performance-based shares | ​ |  | 1,365 | ​ |  | 543
​ | ​ | $ | 2,882 | ​ | $ | 1,693
​
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions |
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2023 | ​ | 2022
Expected volatility |  | 69.54 | % | ​ | 68.38 | %
Expected dividend yield |  | — | % | ​ | — | %
Expected term (in years) |  | 6.00 |  | ​ | 6.00 | ​
Weighted average risk-free rate |  | 3.72 | % | ​ | 2.56 | %
​
Schedule of weighted-average grant date fair value of options granted | Therefore, the weighted-average grant date fair value per share of options granted is as follows for 2022 and 2023:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ | 2023 | ​ | 2022
Weighted average grant date fair value | ​ | $ | 4.79 | ​ | $ | 4.39
​

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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