SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands				2 Months Ended	9 Months Ended	12 Months Ended
	Feb. 11, 2020	Aug. 09, 2019	Jul. 31, 2019	Mar. 12, 2021	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Stock issued during period (in shares)	201,000	396,000	3,960,560		2,766,798
Gross proceeds	$ 28,800	$ 3,000	$ 10,000			$ 37,447	$ 9,919
Net proceeds	$ 26,400		$ 9,900			$ 40,173	$ 10,020
At-The-Market Equity Offering
Subsequent Event [Line Items]
Stock issued during period (in shares)						4,609,701
Gross proceeds						$ 11,400
Net proceeds						11,000
Remaining authorized amount to be sold						$ 13,600
At-The-Market Equity Offering | Subsequent Event
Subsequent Event [Line Items]
Stock issued during period (in shares)				773,900
Share price (in dollars per share)				$ 5.45
Gross proceeds				$ 4,200
Net proceeds				4,100
Remaining authorized amount to be sold				$ 9,400