STOCKHOLDERS' EQUITY (Series B Preferred Stock) (Details) - USD ($)	1 Months Ended	9 Months Ended
	Aug. 31, 2017	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Apr. 30, 2018	Feb. 28, 2018	Dec. 31, 2017	Nov. 30, 2017	Aug. 25, 2017
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)		$ 0.01		$ 0.01
Preferred stock, shares authorized (in shares)		15,000,000		15,000,000
Preferred stock, shares outstanding (in shares)		47		47
Preferred stock, shares issued (in shares)		47		47
Offering Warrants
Class of Stock [Line Items]
Stock rights issued (in shares)	178,666
Exercise price (in dollars per share)	$ 45.00	$ 11.25			$ 4.50	$ 15.60		$ 21.00
Proceeds from issuance of warrants		$ 15,000	$ 795,000
Preferred Class B
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)									$ 0.01
Number of shares converted (in shares)			2,340
Common stock issued on conversion of preferred shares			208,000
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)		6,900		6,900
Preferred Stock, Liquidation Preference Per Share									$ 1,000
2018 Inducement Agreement | Preferred Class B
Class of Stock [Line Items]
Conversion price (in dollars per share)		$ 11.25		$ 15.60
2018 Inducement Agreement | Preferred Class B | Deemed Dividend B
Class of Stock [Line Items]
Beneficial conversion feature			$ 40,000,000
2018 Purchase Agreement | Preferred Class B
Class of Stock [Line Items]
Conversion price (in dollars per share)		$ 15.60					$ 21.00
2018 Purchase Agreement | Preferred Class B | Deemed Dividend A
Class of Stock [Line Items]
Beneficial conversion feature		$ 1,400,000
2018 Note Agreement | Preferred Class B
Class of Stock [Line Items]
Conversion price (in dollars per share)		$ 4.50			$ 11.25
2018 Note Agreement | Preferred Class B | Deemed Dividend K
Class of Stock [Line Items]
Beneficial conversion feature		$ 200,000