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STOCKHOLDERS' EQUITY (Preferred Stock Induced Conversions) (Details) - USD ($) |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Feb. 12, 2019 | Mar. 21, 2018 | Sep. 30, 2019 | Dec. 31, 2018
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
Number of shares converted from debt instrument (in shares) | 120,983 |  |  |
Conversion of convertible debt plus interest into common stock | $ 1,900,000 |  |  |
Warrants exercised |  |  | 20,000 |
Preferred stock, shares outstanding (in shares) |  |  | 47 | 47
Preferred stock, shares issued (in shares) |  |  | 47 | 47
Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares not converted |  |  | 47 |
Preferred Stock [Member] | 2018 Inducement Agreement |  |  |  |
Class of Stock [Line Items] |  |  |  |
Conversion price (in dollars per share) |  | $ 11.25 |  |
Exercise price (in dollars per share) |  |  | $ 11.25 | $ 15.60
Preferred Stock [Member] | 2018 Inducement Agreement | Deemed Dividend D |  |  |  |
Class of Stock [Line Items] |  |  |  |
Warrants, fair value |  |  | $ 1,200,000 |
Convertible Preferred Stock [Member] | Preferred Stock Induced Conversions, First Investor [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Class of Warrant or Right, Warrants or Rights Exercised |  | 44,444 |  |
Convertible Preferred Stock [Member] | Preferred Stock Induced Conversions, Second Investor [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Issuance of warrants in conjunction with issuance of side agreement |  | $ 33,333 |  |

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