COMMON STOCK, TRANSACTIONS (Details)	1 Months Ended				3 Months Ended
	Oct. 31, 2020 USD ($) $ / shares shares	Apr. 30, 2020 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) $ / shares shares	Jan. 31, 2020 shares	Mar. 31, 2021 USD ($) Y $ / shares shares	Mar. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2020 $ / shares	Feb. 11, 2020 $ / shares
Common stock disclosure
Common stock, par value (in dollars per share) | $ / shares					$ 0.00001		$ 0.00001	$ 0.00001
Proceeds from issuance of common stock and warrants, net of commissions and issuance costs						$ 6,035,000
Proceeds from exercise of warrants					$ 8,509,000	286,000
Number of Warrants | shares					14,078,349
April 2020 Shares [Member]
Common stock disclosure
Number of shares issued (in shares) | shares		1,715,240
Equity issuance (in price per unit) | $ / shares		$ 1.75
Proceeds from issuance of common stock		$ 2,600,000
Expected volatility
Common stock disclosure
Fair value assumptions					115.22
Risk-free interest rate
Common stock disclosure
Fair value assumptions					0.63
Contractual term
Common stock disclosure
Fair value assumptions | Y					5
Expected dividend yield
Common stock disclosure
Fair value assumptions					0
April 2020 Warrants
Common stock disclosure
Number of warrants to purchase aggregate number of shares | shares		1,715,240
Exercise price (in dollars per unit) | $ / shares		$ 1.62
Fair value of warrants		$ 2,100,000
Shares issued on exercise of warrants | shares					0
April 2020 Warrants | Expected volatility
Common stock disclosure
Fair value assumptions		115.84
April 2020 Warrants | Risk-free interest rate
Common stock disclosure
Fair value assumptions		0.40
April 2020 Warrants | Contractual term
Common stock disclosure
Warrant expiration term (in years)		5 years 6 months
April 2020 Warrants | Expected dividend yield
Common stock disclosure
Fair value assumptions		0
2018 Warrants {Member]
Common stock disclosure
Exercise price (in dollars per unit) | $ / shares					$ 6.98
Proceeds from exercise of warrants						$ 286,000
Warrants Exercised					$ 0
Number of Warrants | shares					211,921
Shares issued on exercise of warrants | shares						40,975
Series B Warrants 2020 [Member]
Common stock disclosure
Exercise price (in dollars per unit) | $ / shares			$ 0.00001			$ 0.00001
Intrinsic value					$ 4,400,000
Number of Warrants | shares			1,589,842			1,589,842
Shares issued on exercise of warrants | shares				1,016,537	0
Series A Warrants [Member]
Common stock disclosure
Exercise price (in dollars per unit) | $ / shares			$ 2.75			$ 2.75
Fair value of warrants					$ 3,500,000
Number of Warrants | shares			1,589,842			1,589,842
Shares issued on exercise of warrants | shares				0		0
Wainwright 2020 Placement Agent Warrants [Member]
Common stock disclosure
Number of warrants to purchase aggregate number of shares | shares		111,491
Exercise price (in dollars per unit) | $ / shares		$ 2.1875
Proceeds from issuance of common stock and warrants, net of commissions and issuance costs	$ 13,500,000
Fair value of warrants		$ 128,000			$ 218,000
Wainwright 2020 Placement Agent Warrants [Member] | Expected volatility
Common stock disclosure
Fair value assumptions		116.14
Wainwright 2020 Placement Agent Warrants [Member] | Risk-free interest rate
Common stock disclosure
Fair value assumptions		0.36
Wainwright 2020 Placement Agent Warrants [Member] | Contractual term
Common stock disclosure
Fair value assumptions		5
Wainwright 2020 Placement Agent Warrants [Member] | Expected dividend yield
Common stock disclosure
Fair value assumptions		0
Placement Agent Warrants
Common stock disclosure
Percentage of aggregate number of shares available			6.50%
Exercise price (in dollars per unit) | $ / shares			$ 3.4375		$ 1.00	$ 3.4375
Number of Warrants | shares			165,455		1,206,562	165,455
Shares issued on exercise of warrants | shares				0	12,188	0
Series B Prefunded Warrants October 2020
Common stock disclosure
Proceeds from exercise of warrants					$ 8,500,000
Number of Warrants | shares					0
Shares issued on exercise of warrants | shares					10,620,682
March 2020 Series A Warrants
Common stock disclosure
Number of shares issued (in shares) | shares			955,613
Common Stock
Common stock disclosure
Number of shares issued (in shares) | shares						955,613
Underwritten Public Offering March 2020 [Member]
Common stock disclosure
Number of shares issued (in shares) | shares			955,613
Underwritten Public Offering March 2020 [Member] | Common Stock
Common stock disclosure
Equity issuance (in price per unit) | $ / shares			$ 2.75			$ 2.75
Wainwright 2020 Placement Agent Warrants [Member]
Common stock disclosure
Percentage of warrants issued as a percentage of the warrants issued to the investors		6.50%
Proceeds from issuance of common stock and warrants, net of commissions and issuance costs			$ 6,000,000
October 2020 Offering [Member]
Common stock disclosure
Number of shares issued (in shares) | shares	11,785,000
Equity issuance (in price per unit) | $ / shares	$ 0.80
Fair value of warrants	$ 8,700,000
October 2020 Offering [Member] | Expected volatility
Common stock disclosure
Fair value assumptions	119.13
October 2020 Offering [Member] | Risk-free interest rate
Common stock disclosure
Fair value assumptions	0.35
October 2020 Offering [Member] | Contractual term
Common stock disclosure
Warrant expiration term (in years)	5 years
October 2020 Offering [Member] | Expected dividend yield
Common stock disclosure
Fair value assumptions	0.00
October 2020 Offering [Member] | Series A Warrants [Member]
Common stock disclosure
Equity issuance (in price per unit) | $ / shares	$ 0.80
Number of warrants to purchase aggregate number of shares | shares	11,785,000
October 2020 Offering [Member] | Wainwright 2020 Placement Agent Warrants [Member]
Common stock disclosure
Percentage of shares purchased by placement agent	6.50%
Number of warrants to purchase aggregate number of shares | shares	1,218,750
Exercise price (in dollars per unit) | $ / shares	$ 1.00
October 2020 Offering [Member] | Series A Prefunded Warrants October 2020
Common stock disclosure
Number of shares issued (in shares) | shares	6,965,000
Equity issuance (in price per unit) | $ / shares	$ 0.80
Fair value of warrants	$ 551,300
October 2020 Offering [Member] | Series B Prefunded Warrants October 2020
Common stock disclosure
Number of warrants to purchase aggregate number of shares | shares	6,965,000
Exercise price (in dollars per unit) | $ / shares	$ 0.00001
Fair value of warrants	$ 5,600,000