STOCKHOLDERS' EQUITY (Series B Preferred Stock) (Details) - USD ($)				1 Months Ended		3 Months Ended		12 Months Ended
	Nov. 29, 2018	Jun. 29, 2017	Apr. 28, 2017	Nov. 30, 2017	Aug. 31, 2017	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Apr. 16, 2019	Nov. 30, 2018	Apr. 30, 2018	Feb. 28, 2018	Oct. 31, 2017	Aug. 25, 2017
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)								$ 0.01	$ 0.01
Shares callable by warrant (in shares)										1,966,275
Proceeds from Issuance of preferred stock				$ 2,800,000					$ 7,784,000
Number of shares converted (in shares)					1,735,419
Preferred stock, shares authorized (in shares)								15,000,000	15,000,000
Preferred stock, shares outstanding (in shares)								47	4,935
Preferred stock, shares issued (in shares)								47	4,935
Aegis
Class of Stock [Line Items]
Share price (in dollars per share)					$ 1,000
Offering Warrants
Class of Stock [Line Items]
Stock rights issued (in shares)					2,680,000
Exercise price (in dollars per share)				$ 1.40	$ 3.00			$ 0.75			$ 0.15	$ 0.30	$ 1.04
Proceeds from issuance of warrants								$ 795,000
Preferred Class B
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)				$ 1.40	$ 2.50									$ 2.50
Share price (in dollars per share)			$ 1,000
Beneficial conversion feature on warrants				$ 2,000,000
Number of shares converted (in shares)								2,340	3,613
Preferred stock, shares authorized (in shares)								6,900	6,900						6,900
Preferred stock, shares outstanding (in shares)								47	2,387
Preferred stock, shares issued (in shares)								6,900	6,900
Preferred Stock, Liquidation Preference Per Share															$ 1,000
Preferred Class B | Aegis
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)					$ 0.01
Stock rights issued (in shares)					280,000
Warrant unit value (per unit)					$ 2,800
Proceeds from issuance of warrants					$ 5,000,000
Common Stock
Class of Stock [Line Items]
Shares callable by warrant (in shares)					400
Stock rights issued (in shares)					856,446
Exercise price (in dollars per share)		$ 7.50
Number of shares converted (in shares)		5,352,847
Public Stock Offering
Class of Stock [Line Items]
Shares sold in offering (in shares)					6,000
Sale of stock, number of warrants per unit (in shares)			1		1
Proceeds from Issuance of preferred stock					$ 6,000,000
Beneficial conversion feature on warrants				1,200,000	2,300,000
Public Stock Offering | Offering Warrants
Class of Stock [Line Items]
Proceeds from Issuance of preferred stock				$ 1,300,000	$ 2,900,000
Public Stock Offering | Preferred Class B
Class of Stock [Line Items]
Shares sold in offering (in shares)					6,000
Proceeds from Issuance of preferred stock					$ 3,100,000
2018 Inducement Agreement | Preferred Class B
Class of Stock [Line Items]
Conversion price (in dollars per share)	$ 0.15					$ 0.30	$ 0.75		$ 1.04
2018 Inducement Agreement | Preferred Class B | Deemed Dividend B
Class of Stock [Line Items]
Beneficial conversion feature							$ 40,000
2018 Inducement Agreement | Preferred Class B | Deemed Dividend C
Class of Stock [Line Items]
Beneficial conversion feature						$ 200,000
2018 Inducement Agreement | Preferred Class B | Deemed Dividend D
Class of Stock [Line Items]
Beneficial conversion feature	$ 300,000
2018 Purchase Agreement | Preferred Class B
Class of Stock [Line Items]
Conversion price (in dollars per share)								$ 1.04	$ 1.40
2018 Purchase Agreement | Preferred Class B | Deemed Dividend A
Class of Stock [Line Items]
Beneficial conversion feature								$ 1,400,000
Preferred Class B
Class of Stock [Line Items]
Sale of stock, number of warrants per unit (in shares)					1
Number of shares converted (in shares)								3,120,000
Preferred Class B | Common Stock
Class of Stock [Line Items]
Number of shares converted (in shares)									1,550,485