Accrued Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accrued Expense [Abstract]
Accrued expenses	$ 964	$ 909
Accrued employee vacation and bonus	400	400
Accrued professional and consulting fees	200	100
Accrued drug manufacturing, development and testing	200	200
Accrued clinical trial expenses	100
Legal and patent fees		100
Other accrued expenses	$ 100	$ 100