STOCKHOLDERS' EQUITY (DEFICIT) - Equity Financing (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	1 Months Ended		3 Months Ended	5 Months Ended
	Nov. 30, 2019	Jun. 30, 2019	Mar. 31, 2020	Mar. 31, 2020	Mar. 30, 2020
Class of Stock [Line Items]
Proceeds from sale of stock		$ 27,800
Sale of stock, shares issued (in shares)		20.4
Stock price per share (in dollars per share)		$ 1.47
Issuance of common stock, issuance costs			$ 98
Number of warrants issued (in shares)		20.4
Exercise price per warrant (in dollars per share)		$ 1.47
Warrants exercise period		1 year
ATM Facility
Class of Stock [Line Items]
Aggregate sales price	$ 35,000
Commission fixed rate	3.00%
Legal, accounting and printing costs				$ 200
Proceeds from sale of stock			$ 3,200	$ 5,100
Sale of stock, shares issued (in shares)			3.2	5.2
Stock price per share (in dollars per share)			$ 1.06	$ 1.06	$ 1.02