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STOCKHOLDERS' EQUITY (Series C Warrants) (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2018 | Apr. 30, 2018 | Feb. 28, 2018 | Nov. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 29, 2017
Class of Stock [Line Items] |  |  |  |  |  |  |
Underlying shares (in shares) |  |  |  |  | 13,763,608 |  |
Warrants, fair value |  |  |  |  |  |  | $ 211,000
Deemed dividend |  |  |  |  | $ 4,222,000 | $ 12,431,000 |
Warrants exercised |  |  |  |  | 300,000 |  |
Series C Warrants [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Underlying shares (in shares) |  |  |  | 1,962,857 |  |  |
Exercise price (in dollars per share) |  |  |  | $ 1.63 |  |  |
Class of warrant or right, term |  |  |  | 5 years |  |  |
Percentage of outstanding shares owned threshold prior to exercise of warrants |  |  |  | 4.99% |  |  |
Percentage of outstanding shares owned threshold after exercise of warrants |  |  |  | 9.99% |  |  |
2018 Purchase Agreement | Deemed Dividend R |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Deemed dividend |  |  |  |  | $ 58,000 |  |
2018 Purchase Agreement | Series C Warrants [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 1.04 |  | $ 0.75 |  |
2018 Purchase Agreement | Series C Warrants [Member] | Deemed Dividend R |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Deemed dividend |  |  | $ 58,000 |  |  |  |
2018 Note Agreement |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ 0.15 | $ 0.30 |  |  |  |  |
2018 Note Agreement | Deemed Dividend S |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Deemed dividend |  |  |  |  | $ 45,000 |  |
2018 Note Agreement | Series C Warrants [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ 0.15 | $ 0.30 |  |  |  |  |
Warrants exercised |  |  |  |  | 1,587,300 |  |
Proceeds from issuance of warrants |  |  |  |  | $ 476,000 |  |
Intrinsic value of warrants exercised in period |  |  |  |  | $ 294,000 |  |
2018 Note Agreement | Series C Warrants [Member] | Deemed Dividend S |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Deemed dividend |  | $ 45,000 |  |  |  |  |
2018 Note Agreement | Series C Warrants [Member] | Deemed Dividend T |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Deemed dividend | $ 4,000 |  |  |  |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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