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STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2022
STOCKHOLDERS' EQUITY |
Summary of stock warrant activity | A summary of stock warrant activity for the years ended December 31, 2022 and 2021 are presented below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | Aggregate
​ | ​ | Number of | ​ | Average | ​ | Remaining | ​ | Intrinsic
​ | ​ | Warrants | ​ | Exercise | ​ | Contractual | ​ | Value
​ |  | (in thousands) |  | Price |  | Life (Years) |  | (in thousands)
Outstanding at December 31, 2020 |  | 110 | ​ | $ | 2.39 | ​ | ​ | 3.76 |  | $ | 1,084
Granted |  | — | ​ | $ | — | ​ |  | ​ |  | ​ | ​
Exercised |  | (10) | ​ | $ | 2.27 | ​ |  | 2.76 |  | ​ | 192
Forfeited(1) |  | (1) | ​ | $ | 2.27 | ​ |  | 2.76 |  | ​ | 25
Outstanding and exercisable at December 31, 2021 |  | 99 | ​ | $ | 2.39 | ​ |  | 2.76 | ​ | $ | 660
Granted |  | — | ​ | $ | — | ​ |  | ​ | ​ | ​ | ​
Exercised |  | — | ​ | $ | — | ​ |  | — | ​ | ​ | —
Forfeited |  | — | ​ | $ | — | ​ |  | — | ​ |  | —
Outstanding and exercisable at December 31, 2022 |  | 99 | ​ | $ | 2.39 | ​ |  | 1.76 | ​ | $ | 1,140
(1) | Warrants were exercised under a net exercise provision in the warrant agreement. As a result, approximately 1,000 warrants were forfeited in lieu of cash payment for shares during 2021.

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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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