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STOCKHOLDERS' EQUITY (Remaining Warrants) (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Apr. 30, 2018 | Dec. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2018 | Dec. 31, 2018 | Nov. 30, 2018 | Aug. 31, 2018 | Feb. 28, 2018 | Dec. 31, 2017 | Jun. 29, 2017
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant, number of securities called by warrants |  |  | 13,763,608 |  |  | 13,763,608 |  |  |  |  |
Warrants, fair value |  |  |  |  |  |  |  |  |  |  | $ 211
Loss on extinguishment of debt and induced conversion of convertible bridge notes |  |  |  |  |  | $ 1,328 |  |  |  |  |
Creditor Warrants Relating to Secured Debt [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant, number of securities called by warrants |  |  |  |  |  |  |  |  | 108,112 | 108,112 |
Warrants, exercise price per share |  |  |  |  |  |  |  |  | $ 7.50 | $ 7.50 |
Class of warrant or right, term |  |  |  |  |  | 5 years |  |  |  |  |
April 2018 Warrants |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) |  | 3,648,352 |  |  |  |  |  |  |  |  |
Warrants, exercise price per share | $ 0.50 | $ 0.75 |  | $ 0.50 | $ 0.50 |  |  |  |  |  |
Warrants, fair value |  | $ 1,100 |  |  |  |  |  |  |  |  |
April 2018 Warrants, First Half |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  | 5 years |  | 5 years |  | 5 years |  |  |  |  |
April 2018 Warrants, Second Half |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  | 1 year |  | 1 year |  | 1 year |  |  |  |  |
Advisor Warrants |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) |  | 232,000 |  |  |  |  |  |  |  |  |
Warrants, fair value |  | $ 100 |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  |  |  | 4 years |  |  |  |  |  |  |
Quarter 3 2018 Warrants |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) |  |  |  | 2,945,055 |  |  |  |  |  |  |
Quarter 3 2018 Warrants | Convertible Debt [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant, number of securities called by warrants | 2,945,055 |  |  | 2,945,055 | 2,945,055 |  |  |  |  |  |
Warrants, exercise price per share | $ 0.50 |  |  | $ 0.50 | $ 0.50 |  |  | $ 0.75 |  |  |
Warrants, fair value | $ 700 |  |  | $ 700 | $ 700 |  |  |  |  |  |
Loss on extinguishment of debt and induced conversion of convertible bridge notes | $ 100 |  |  |  |  |  |  |  |  |  |
Quarter 3 2018 Warrants, First Half [Member] | Convertible Debt [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  |  |  |  | 5 years |  |  |  |  |  |
Quarter 3 2018 Warrants, Second Half [Member] | Convertible Debt [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  |  |  |  | 1 year |  |  |  |  |  |
Warrants Not Assumed In Merger, Expiring November 2023 [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant, number of securities called by warrants |  |  | 2,084,126 |  |  | 2,084,126 |  |  |  |  |
Warrants, exercise price per share |  |  | $ 0.36 |  |  | $ 0.36 |  |  |  |  |
Warrants Not Assumed In Merger, Expiring December 2023 [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant, number of securities called by warrants |  |  | 2,417,586 |  |  | 2,417,586 |  |  |  |  |
Warrants, exercise price per share |  |  | $ 0.36 |  |  | $ 0.36 |  |  |  |  |
Quarter 4 2018 Warrants |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) |  |  | 4,501,712 |  |  |  |  |  |  |  |
Quarter 4 2018 Warrants | Convertible Debt [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant, number of securities called by warrants |  |  | 4,501,712 |  |  | 4,501,712 |  |  |  |  |
Warrants, exercise price per share |  |  | $ 0.36 |  |  | $ 0.36 |  |  |  |  |
Warrants, fair value |  |  | $ 700 |  |  | $ 700 |  |  |  |  |
Warrants term |  |  | 5 years |  |  |  |  |  |  |  |
2018 Note Agreement |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Warrants, exercise price per share |  | $ 0.30 |  |  |  |  | $ 0.15 |  |  |  |
2018 Note Agreement | April 2018 Warrants, First Half |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  |  |  |  |  | 1 year |  |  |  |  |
2018 Note Agreement | April 2018 Warrants, Second Half |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, term |  |  |  |  |  | 5 years |  |  |  |  |
2018 Note Agreement | Advisor Warrants |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) |  | 232,000 |  |  |  |  |  |  |  |  |
Warrants, exercise price per share |  | $ 0.75 |  |  |  |  |  |  |  |  |
Warrants, fair value |  | $ 100 |  |  |  |  |  |  |  |  |

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- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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://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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- Definition Consideration given by issuer of convertible debt to provide an incentive for debt holders to convert the debt to equity securities. The expense is equal to the fair value of all securities and other consideration transferred in the transaction in excess of the fair value of securities issuable pursuant to the original conversion terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 40 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=77886427&loc=d3e6835-112609 + Details
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