Accounts Payable, Accrued Expenses, and Other Liabilities - Schedule of Other Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Other Liabilities Disclosure [Abstract]
Accounts payable and accrued expenses	$ 1,330	$ 2,389
Other liabilities, current:
Accrued compensation and benefits	1,293	3,116
Accrued directors fees	38	41
Operating lease liability	31	9
Warrant liabilities	0	6
Total	$ 2,692	$ 5,561
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable, accrued expenses, and other liabilities	Accounts payable, accrued expenses, and other liabilities
Other liabilities, non-current:
Operating lease liability	$ 23	$ 0
Total	$ 23	$ 0
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total	Total