SHARE-BASED COMPENSATION (Details) - USD ($) $ in Thousands				1 Months Ended	3 Months Ended		6 Months Ended	60 Months Ended
	Aug. 04, 2020	Jan. 31, 2020	Jan. 31, 2020	Jun. 30, 2015	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2015	Dec. 31, 2020	Apr. 30, 2015
Stock options
Expected term					10 years
Vesting period					48 months
Stock-based compensation (in dollars)					$ 52	$ 70
2010 Plan
Stock options
Granted (in shares)				0	0		0	0
Expected term					10 years
2015 Plan
Stock options
Shares available for future grants					67,419
Shares authorized for issuance									5,333
Expected term					10 years
Increase in shares of common stock reserved for issuance (in shares)	400,000		26,667
2015 Plan Amendment [Member]
Stock options
Shares authorized for issuance		32,000	32,000
Increase in shares of common stock reserved for issuance (in shares)	400,000	26,667
2007 Plan
Stock options
Expected term					10 years