ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Contracted research services	$ 7,755	$ 12,192
Payroll and related expenses	3,890	5,088
Professional and consulting fees	$ 963	$ 1,935
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total accrued expenses and other current liabilities	Total accrued expenses and other current liabilities
Current portion of operating lease liability	$ 2,775	$ 320
Total accrued expenses and other current liabilities	$ 15,383	$ 19,535