BUSINESS DESCRIPTION (Narrative) (Details) - USD ($)				3 Months Ended	12 Months Ended			36 Months Ended
	Mar. 26, 2020	Jan. 15, 2019	Sep. 07, 2018	Mar. 25, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Apr. 30, 2020	Apr. 13, 2020	Apr. 09, 2020
Business Acquisition [Line Items]
Accumulated Net Income (Loss)					$ 10,600,000			$ 10,600,000
Working deficiency					500,000			500,000
Net cash used in operating activities					(7,434,000)	$ (9,141,000)
Proceeds from issuance of common stock					8,929,000	$ 6,628,000
Proceeds from long-term debt					$ 787,000
Maximum aggregate initial offering price										$ 50,000,000	$ 50,000,000
Lincoln Park [Member]
Business Acquisition [Line Items]
Value of shares issued	$ 10,000,000		$ 10,000,000
Shares sold in offering (in shares)	4,980,000				1,040,654	2,778,077	328,590
Proceeds from issuance of common stock					$ 1,400,000		$ 1,400,000	$ 9,400,000
Equity purchase agreement value remaining available	$ 1,200,000
Lincoln Park [Member] | Maximum
Business Acquisition [Line Items]
Value of shares issued			$ 1,000,000
Shares sold in offering (in shares)			30,000
LP 2020 Purchase Agreement [Member]
Business Acquisition [Line Items]
Proceeds from issuance of common stock	$ 8,800,000
Crede Note
Business Acquisition [Line Items]
Proceeds from issuance of common stock		$ 4,000,000
Subsequent Events | Lincoln Park [Member]
Business Acquisition [Line Items]
Shares sold in offering (in shares)				500,000
Proceeds from issuance of common stock				$ 1,300,000
Joint Venture
Business Acquisition [Line Items]
Percentage of interest in joint venture									49.00%
Joint Venture | Poplar Put Right [Member] | Scenario, Plan [Member]
Business Acquisition [Line Items]
Percentage of interest in joint venture					100.00%			100.00%
Price per share					$ 1.00			$ 1.00
Purchase price					$ 51			$ 51
Joint Venture | Popular Healthcare PLLC
Business Acquisition [Line Items]
Percentage of interest in joint venture									51.00%