STOCK-BASED COMPENSATION - Schedule of Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Expense
Share-based compensation	$ 876	$ 1,163	$ 1,732	$ 2,056
Research and development expenses
Expense
Share-based compensation	138	393	182	622
Selling, general and administrative
Expense
Share-based compensation	738	770	1,550	1,786
Discontinued operations
Expense
Share-based compensation	$ 0	$ 0	$ 0	$ (352)