STOCKHOLDERS' EQUITY (Common Stock, 2018 Purchase Agreement and LP Purchase Agreement) (Details) - USD ($)		3 Months Ended		9 Months Ended		24 Months Ended
	Mar. 26, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Mar. 25, 2022	Dec. 31, 2021	Dec. 20, 2018	Dec. 19, 2018
Class of Stock [Line Items]
Common stock, shares authorized (in shares)		150,000,000		150,000,000			150,000,000	250,000,000	150,000,000
Proceeds upon issuance of common stock from exercise of warrants (in shares)			0
Exercised (in shares)			1,229		1,229
Proceeds upon issuance of common stock from exercise of stock options			$ 3,000		$ 3,000
Issuance of common stock in connection with at the market offering, net of issuance costs		$ 129,000		$ 129,000	14,947,000
Shares issued (in shares)		22,820,260		22,820,260			22,708,442
Common stock, shares outstanding (in shares)		22,820,260		22,820,260			22,708,442
Issuance of common stock, net of issuance costs				$ 129,000	16,207,000
Issuance of common stock for consulting services					$ 150,000
Common Stock [Member]
Class of Stock [Line Items]
Proceeds upon issuance of common stock from exercise of warrants (in shares)		26,529	1,229	26,795	74,000
Warrant exercises in period				26,795
Proceeds upon issuance of common stock from exercise of stock options (in shares)					1,229
Issuance of common stock in connection with at the market offering, net of issuance costs		$ 1,000		$ 1,000	$ 45,000
Shares issued (in shares)		85,023		85,023	4,501,000
Issuance of common stock for consulting services (in shares)					55,147
Issuance of common stock for consulting services					$ 200,000
Common Stock [Member]
Class of Stock [Line Items]
Proceeds upon issuance of common stock from exercise of warrants (in shares)		26,529		26,795	74,000
Warrant exercises in period		26,529	0		74,000
Proceeds from exercise of warrants			$ 400,000		$ 200,000
Preferred Class B
Class of Stock [Line Items]
Conversion price (in dollars per share)		$ 0.40		$ 0.40
Lincoln Park [Member]
Class of Stock [Line Items]
Shares sold in offering (in shares)			0		500,000
Issuance of common stock, net of issuance costs			$ 0		$ 1,300,000
Maximum [Member] | Common Stock [Member]
Class of Stock [Line Items]
Proceeds from exercise of warrants				$ 11,000
LP 2020 Purchase Agreement [Member]
Class of Stock [Line Items]
Purchase agreement term						24 months
LP 2020 Purchase Agreement [Member] | Lincoln Park [Member]
Class of Stock [Line Items]
Issuance of common stock in connection with at the market offering, net of issuance costs	$ 10,000,000