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NET LOSS PER SHARE (Tables) | 6 Months Ended
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Jun. 30, 2020
NET LOSS PER SHARE |
Schedule of computation of loss per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Three Months Ended |  | For the Six Months Ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019
Numerator: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Net loss | ​ | $ | (6,341,699) | ​ | $ | (5,570,391) | ​ | $ | (12,827,343) | ​ | $ | (10,889,316)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ |  | ​ | ​ |  |  | ​ |  | ​ | ​ |  |
Weighted average common shares outstanding | ​ |  | 46,572,739 | ​ |  | 45,501,078 | ​ |  | 46,328,561 | ​ |  | 45,483,513
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net loss per share data: | ​ |  | ​ | ​ |  |  | ​ |  | ​ | ​ |  |
Basic and Diluted | ​ | $ | (0.14) | ​ | $ | (0.12) | ​ | $ | (0.28) | ​ | $ | (0.24)
Schedule of anti-dilutive securities | ​
​ | ​ | ​ | ​ | ​
​ |  | For the Six Months Ended
​ | ​ | June 30,
​ |  | 2020 |  | 2019
Common stock options |  | 5,842,000 |  | 4,568,000
Common stock purchase warrants |  | 21,381,000 |  | 22,979,000
Common stock warrants - liability treatment |  | — |  | 27,000
Potentially dilutive securities |  | 27,223,000 |  | 27,574,000

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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