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STOCKHOLDERS' EQUITY (Preferred Stock Induced Conversions) (Details) - USD ($) |  | 9 Months Ended |
--- | --- | --- | ---
Mar. 21, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Class of Stock [Line Items] |  |  |  |
Preferred stock, shares authorized (in shares) |  | 15,000,000 |  | 15,000,000
Preferred stock, par value (in dollars per share) |  | $ 0.01 |  | $ 0.01
Long-term debt exchanged for convertible notes |  | $ 2,108,000 |  |
Warrants exercised |  | 300,000 |  |
Issuance of warrants in conjunction with issuance of side agreement |  |  | $ 487,000 |
Preferred stock, shares outstanding (in shares) |  | 47 |  | 4,935
Preferred stock, shares issued (in shares) |  | 47 |  | 4,935
Inducement Agreement 2018 [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock, par value (in dollars per share) | $ 0.01 |  |  |
Inducement Agreement 2018 [Member] | Warrants After Conversion Price Reduction [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Warrants, fair value |  | $ 100,000 |  |
Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares not converted |  | 47 |  |
Preferred Stock [Member] | Inducement Agreement 2018 [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Conversion price (in dollars per share) |  | $ 0.75 |  | $ 1.04
Shares converted, value |  | $ 1,100,000 |  |
Warrants, fair value |  | $ 1,200,000 |  |
Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of shares converted from debt instrument (in shares) |  | 3,787,300 |  |
Convertible Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Exercise price (in dollars per share) | $ 0.75 |  |  |
Warrants issued during period, maximum allowed percentage of common stock | 4.99% |  |  |
Convertible Preferred Stock | Preferred Stock Induced Conversions First Investor [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Class of warrant or right, warrants or rights exercised | 666,666 |  |  |
Convertible Preferred Stock | Preferred Stock Induced Conversions Second Investor [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Issuance of warrants in conjunction with issuance of side agreement | $ 500,000 |  |  |

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