SHARE-BASED COMPENSATION PLANS - Expense by Classification (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total	$ 59	$ 611	$ 618	$ 1,210
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total	(111)	292	106	587
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total	$ 170	$ 319	$ 512	$ 623