SUPPLEMENTAL FINANCIAL INFORMATION - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Supplemental Financial Information [Abstract]
Compensation and other employee liabilities	$ 873	$ 4,207
Research and development	5,033	1,796
Interest	249	249
Operating lease liability, current	138	133
Operating lease liability, noncurrent	114	150
Operating lease liability	252	283
Other, current	418	230
Other, noncurrent	0	0
Other	418	230
Accrued expenses and other current liabilities	$ 6,711	$ 6,615
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Other liabilities, long-term	$ 114	$ 150
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities, long-term	Other liabilities, long-term
Total	$ 6,825	$ 6,765