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STOCKHOLDERS' EQUITY (Series B Preferred Stock) (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2017 | Sep. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Apr. 30, 2018 | Mar. 21, 2018 | Feb. 28, 2018 | Dec. 31, 2017 | Nov. 30, 2017 | Oct. 31, 2017 | Aug. 28, 2017 | Aug. 25, 2017
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  | $ 0.01 |  | $ 0.01 |  |  |  |  | $ 0.01 |  |  |  |
Proceeds from Issuance of preferred stock |  |  |  |  | $ 5,380,000 |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 15,000,000 |  | 15,000,000 |  |  |  |  | 15,000,000 |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 47 |  | 47 |  |  |  |  | 4,935 |  |  |  |
Preferred stock, shares issued (in shares) |  | 47 |  | 47 |  |  |  |  | 4,935 |  |  |  |
Offering Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) | 2,680,000 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ 3.00 | $ 0.75 |  | $ 0.75 |  | $ 0.30 |  | $ 1.04 |  | $ 1.40 |  |  |
Proceeds from issuance of warrants |  | $ 24,000 |  | $ 795,000 |  |  |  |  |  |  |  |  |
Preferred Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 | $ 0.01
Shares callable by warrant (in shares) | 400 |  |  |  |  |  |  |  |  |  |  |  |
Conversion price (in dollars per share) | $ 2.50 |  |  |  |  |  |  |  |  | $ 1.40 | $ 2.50 |  |
Number of shares converted (in shares) |  |  |  | 2,340 |  |  |  |  |  |  |  |  |
Common stock issued on conversion of preferred shares |  |  |  | 3,120,000 |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 6,900 |  | 6,900 |  |  |  |  |  |  |  |  | 6,900
Preferred stock, shares outstanding (in shares) |  | 47 |  | 47 |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  | 47 |  | 47 |  |  |  |  |  |  |  |  |
Preferred stock, liquidation preference per share |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000
Preferred Class B [Member] | Aegis [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | 0.01 |  |  |  |  |  |  |  |  |  |  |  |
Share price (in dollars per share) | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) | 280,000 |  |  |  |  |  |  |  |  |  |  |  |
Warrant unit value (per unit) | $ 2,800 |  |  |  |  |  |  |  |  |  |  |  |
Public Stock Offering [Member] | Preferred Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares sold in offering (in shares) | 6,000 |  |  |  |  |  |  |  |  |  |  |  |
Purchase Agreement 2018 [Member] | Preferred Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion price (in dollars per share) |  | $ 1.04 |  | $ 1.04 |  |  |  |  | $ 1.40 |  |  |  |
Beneficial conversion feature |  |  |  | $ 1,400,000 |  |  |  |  |  |  |  |  |
Inducement Agreement 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  |  |  |  | $ 0.01 |  |  |  |  |  |
Beneficial conversion feature |  | $ 216,000 |  |  |  |  |  |  |  |  |  |  |
Inducement Agreement 2018 [Member] | Preferred Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion price (in dollars per share) |  | $ 0.30 | $ 0.75 | $ 0.30 |  |  |  |  | $ 1.04 |  |  |  |
Beneficial conversion feature |  |  | $ 40,000 |  |  |  |  |  |  |  |  |  |

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