STOCKHOLDERS' EQUITY (Remaining Warrants) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended
	Sep. 30, 2018	Apr. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	May 31, 2019	Apr. 30, 2019	Dec. 31, 2018	Feb. 28, 2018
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants			907,601
Change in fair value due to repricing			$ (936)	$ (240)
Creditor Warrants Relating to Secured Debt
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants							7,207	7,207
Exercise price (in dollars per share)								$ 112.50
April 2018 Warrants
Class of Stock [Line Items]
Stock rights issued (in shares)		243,224
Exercise price (in dollars per share)		$ 11.25
April 2018 Warrants, First Half
Class of Stock [Line Items]
Class of warrant or right, term		5 years
April 2018 Warrants, Second Half
Class of Stock [Line Items]
Class of warrant or right, term		1 year
Quarter 3 2018 Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share)						$ 5.40
Warrants term						5 years
Quarter 3 2018 Warrants | Convertible Debt [Member]
Class of Stock [Line Items]
Number of Warrants issued				196,340
Exercise price (in dollars per share)				$ 11.25
Modified exercise price	$ 7.50
Quarter 3 2018 Warrants, First Half [Member] | Convertible Debt [Member]
Class of Stock [Line Items]
Class of warrant or right, term				5 years
Quarter 3 2018 Warrants, Second Half [Member] | Convertible Debt [Member]
Class of Stock [Line Items]
Class of warrant or right, term				1 year
Warrants Not Assumed In Merger, Expiring November 2023 [Member]
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants			75,788
Exercise price (in dollars per share)			$ 5.40
Warrants Not Assumed In Merger, Expiring December 2023 [Member]
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants			51,282
Exercise price (in dollars per share)			$ 5.40
Quarter 4 2018 Warrants | Convertible Debt [Member]
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants							300,115
Exercise price (in dollars per share)							$ 5.40
Warrants term							5 years
April 2019 Bridge Notes | Convertible Debt [Member]
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants						147,472
Exercise price (in dollars per share)						$ 5.40
Warrants term						5 years
May 2019 Warrants | Convertible Debt [Member]
Class of Stock [Line Items]
Class of warrant, number of securities called by warrants					154,343
Exercise price (in dollars per share)					$ 5.40
Warrants term					5 years
2018 Note Agreement | Advisor Warrants
Class of Stock [Line Items]
Stock rights issued (in shares)		15,466
Exercise price (in dollars per share)		$ 11.25