COMMON STOCK, TRANSACTIONS (Details)		1 Months Ended							3 Months Ended
	May 30, 2018 USD ($) shares	Nov. 30, 2020 USD ($)	Mar. 31, 2020 USD ($) Y $ / shares shares	Nov. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($) $ / shares shares	May 31, 2018 shares	Jan. 31, 2018 USD ($)	Mar. 31, 2020 USD ($) Y $ / shares shares	Mar. 31, 2019 USD ($) shares	Jun. 30, 2018 USD ($) $ / shares shares	Dec. 31, 2019 $ / shares shares
Common stock disclosures
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 issuance costs									$ 6,035,000
Proceeds from exercise of warrants									$ 286,000
Number of Warrants | shares			3,514,180						3,514,180
Expected volatility
Common stock disclosures
Fair value assumptions			115.22						115.22
Risk-free interest rate
Common stock disclosures
Fair value assumptions			0.63						0.63
Contractual term
Common stock disclosures
Fair value assumptions | Y			5						5
Expected dividend yield
Common stock disclosures
Fair value assumptions			0						0
401(k)
Common stock disclosures
Company contributions to employee 401(k) accounts									$ 19,000	$ 12,000
2018 Series A Warrant
Common stock disclosures
Exercise price (in dollars per unit) | $ / shares			$ 6.98	$ 6.98					$ 6.98
Fair value of warrants						$ 13,700,000					$ 13,700,000
Number of Warrants | shares			211,921						211,921
2018 Series B Warrant Exercise price $.01
Common stock disclosures
Fair value of warrants						11,500,000					11,500,000
Shares issued on exercise of warrants | shares									1,016,537
2018 Warrants
Common stock disclosures
Fair value adjustment of warrants					$ 764,000
Warrant reclassified to equity					14,700,000
Series B Warrants 2020 [Member]
Common stock disclosures
Exercise price (in dollars per unit) | $ / shares			$ 0.00001						$ 0.00001
Intrinsic value			$ 4,400,000						$ 4,400,000
Number of Warrants | shares			1,589,842						1,589,842
Series A Warrants [Member]
Common stock disclosures
Exercise price (in dollars per unit) | $ / shares			$ 2.75						$ 2.75
Fair value of warrants			$ 3,500,000						$ 3,500,000
Number of Warrants | shares			2,545,455						2,545,455
Wainwright 2020 Placement Agent Warrants [Member]
Common stock disclosures
Fair value of warrants			$ 218,000						$ 218,000
Placement Agent Warrants
Common stock disclosures
Percentage of aggregate number of shares available			6.50%
Exercise price (in dollars per unit) | $ / shares			$ 3.4375						$ 3.4375
Fair value of warrants			$ 59,000						$ 59,000
Number of Warrants | shares			165,455						165,455
Placement Agent Warrants | Expected volatility
Common stock disclosures
Fair value assumptions			100.82						100.82
Placement Agent Warrants | Risk-free interest rate
Common stock disclosures
Fair value assumptions			1.61						1.61
Placement Agent Warrants | Contractual term
Common stock disclosures
Fair value assumptions | Y			5						5
Placement Agent Warrants | Expected dividend yield
Common stock disclosures
Fair value assumptions			0						0
Common Stock
Common stock disclosures
Issuance of common stock in public offerings (in shares) | shares									955,613
Common Stock | 401(k)
Common stock disclosures
Aggregate number of shares reserved for issuance | shares							137
Number of additional shares reserved | shares							134
Underwritten Public Offering, June 2018
Common stock disclosures
Proceeds from issuance of common stock and warrants, net of issuance costs						13,500,000
Reclassification of derivative warrant liability to additional paid-in capital						$ 287,000
Derivative loss											$ 12,000,000
Underwritten Public Offering, June 2018 | 2018 Series A Warrant
Common stock disclosures
Number of shares/warrants comprised in a unit (in shares) | shares						1
Warrant expiration term (in years)						5 years					5 years
Exercise price (in dollars per unit) | $ / shares						$ 60.00					$ 60.00
Underwritten Public Offering, June 2018 | 2018 Series B Warrant Exercise price $.01
Common stock disclosures
Warrant expiration term (in years)						20 years					20 years
Exercise price (in dollars per unit) | $ / shares						$ 0.30					$ 0.30
Number of Warrants | shares			0						0			0
Underwritten Public Offering, June 2018 | Common Stock
Common stock disclosures
Number of shares/warrants comprised in a unit (in shares) | shares						1
Number of shares of common stock to be purchased by each warrant | shares						1					1
Underwritten Public Offering, June 2018 | Common Stock And Warrants
Common stock disclosures
Issuance of common stock in public offerings (in shares) | shares						45,950
Equity issuance (in price per unit) | $ / shares						$ 60.00					$ 60.00
Pre Funded Units
Common stock disclosures
Issuance of common stock in public offerings (in shares) | shares						208,096
Equity issuance (in price per unit) | $ / shares						$ 59.70					$ 59.70
Pre Funded Units | 2018 Series A Warrant
Common stock disclosures
Number of shares/warrants comprised in a unit (in shares) | shares						1
Pre Funded Units | 2018 Series B Warrant Exercise price $.01
Common stock disclosures
Number of shares/warrants comprised in a unit (in shares) | shares						1
Pre Funded Units | Common Stock
Common stock disclosures
Number of shares of common stock to be purchased by each warrant | shares						1					1
Underwritten public offering during November, 2019.
Common stock disclosures
Issuance of common stock in public offerings (in shares) | shares				233,341
Equity issuance (in price per unit) | $ / shares				$ 3.60
Proceeds from issuance of common stock and warrants, net of issuance costs				$ 367,000
Underwritten public offering during November, 2019. | Placement Agent Warrants
Common stock disclosures
Exercise price (in dollars per unit) | $ / shares				$ 4.50
Number of Warrants | shares				15,168
Underwritten Public Offering March 2020 [Member]
Common stock disclosures
Issuance of common stock in public offerings (in shares) | shares			955,613
Underwritten Public Offering March 2020 [Member] | Series B Warrants 2020 [Member]
Common stock disclosures
Equity issuance (in price per unit) | $ / shares			$ 2.74999						$ 2.74999
Underwritten Public Offering March 2020 [Member] | Common Stock
Common stock disclosures
Equity issuance (in price per unit) | $ / shares			$ 2.75						$ 2.75
Purchase and registration rights agreement | Common Stock
Common stock disclosures
Issuance of common stock in public offerings (in shares) | shares	574									0
Aggregate proceeds could be received								$ 15,000,000
Term								24 months
Deferred offering costs	$ 627,000
Purchase and registration rights agreement | Common Stock | Maximum
Common stock disclosures
Aggregate number of shares reserved for issuance | shares	40,000
Wainwright 2020 Placement Agent Warrants [Member]
Common stock disclosures
Proceeds from issuance of common stock and warrants, net of issuance costs			$ 6,000,000
Ladenburg Warrant Amendment [Member]
Common stock disclosures
Fair value adjustment of warrants					764,000
Warrant reclassified to equity					$ 14,700,000
Ladenburg Warrant Amendment [Member] | Series A Warrants [Member]
Common stock disclosures
Fair value adjustment of warrants		$ 666,000
Proceeds from exercise of warrants									$ 286,000
Shares issued on exercise of warrants | shares									40,975