STOCKHOLDERS' EQUITY (Convertible Promissory Note Warrants) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Feb. 29, 2020	Oct. 03, 2017
Class of Stock [Line Items]
Deemed dividend		$ 3,344,000	$ 0
Convertible Promissory Note Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share)					$ 45.00
2018 Purchase Agreement | Deemed Dividend D
Class of Stock [Line Items]
Deemed dividend		$ 5,000
Maximum | Convertible Promissory Note Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share)	$ 0.40			$ 2.25
Maximum | Convertible Promissory Note Warrants | Deemed Dividend D
Class of Stock [Line Items]
Deemed dividend	$ 1,000