STOCKHOLDERS' EQUITY (Preferred Stock Induced Conversions) (Details) - USD ($)			12 Months Ended
	Mar. 21, 2018	Feb. 12, 2018	Dec. 31, 2019	Dec. 31, 2018	Nov. 29, 2018	Mar. 12, 2018	Aug. 25, 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
Number of shares converted from debt instrument (in shares)		120,983
Conversion of convertible debt plus interest into common stock		$ 1,900,000	$ 7,553,000	$ 2,356,000
Deemed dividend			$ 0	$ 4,222,000
Warrants exercised			20,000
Preferred stock, shares outstanding (in shares)			47	47
Preferred stock, shares issued (in shares)			47	47
2018 Inducement Agreement | Warrants After Conversion Price Reduction [Member] | Deemed Dividend F
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] | 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 F
Class of Stock [Line Items]
Shares converted, value			$ 1,100,000
Warrants, fair value			$ 1,200,000
Common Stock
Class of Stock [Line Items]
Number of shares converted from debt instrument (in shares)			310,200	252,486
Conversion of convertible debt plus interest into common stock			$ 7,600,000	$ 2,400,000
Preferred Class B
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			6,900	6,900			6,900
Preferred stock, par value (in dollars per share)							$ 0.01
Number of shares converted (in shares)			2,340
Preferred stock, shares outstanding (in shares)			47	47
Preferred stock, shares issued (in shares)			6,900	6,900
Preferred Class B | 2018 Inducement Agreement
Class of Stock [Line Items]
Conversion price (in dollars per share)			$ 11.25		$ 2.25
Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Exercise price (in dollars per share)	$ 11.25		$ 11.25
Warrants Issued During Period, Maximum Allowed Percentage of Common Stock	4.99%
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