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STOCKHOLDERS' EQUITY (Convertible Promissory Note Warrants) (Details) - USD ($) | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Feb. 28, 2018 | Aug. 31, 2017
Convertible Promissory Note Warrants |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Exercise price (in dollars per share) |  | $ 21.00 |  |  | $ 45.00
2018 Inducement Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Deemed dividend |  |  | $ 3,848,000 |  |
2018 Inducement Agreement | Convertible Promissory Note Warrants |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Exercise price (in dollars per share) |  | $ 11.25 |  |  |
2018 Purchase Agreement | Convertible Promissory Note Warrants |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Exercise price (in dollars per share) |  |  |  | $ 15.60 |
2018 Note Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Exercise price (in dollars per share) | $ 4.50 |  |  |  |
2018 Note Agreement | Deemed Dividend N |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Deemed dividend | $ 1,000 |  |  |  |
Maximum | 2018 Inducement Agreement | Convertible Promissory Note Warrants | Deemed Dividend I |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Deemed dividend |  | $ 1,000 |  |  |
Maximum | 2018 Purchase Agreement | Convertible Promissory Note Warrants | Deemed Dividend H |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Deemed dividend |  | $ 1,000 |  |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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