Selected Balance Sheet Information (Schedule of Accrued Expenses) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Selected Balance Sheet Information [Abstract]
Clinical trial and other professional fees	$ 277	$ 1,733
Bonuses	3,335	2,303
Paid time off	770	960
Customer rebates	411	256
Operating lease liability, current portion	$ 231	$ 222
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total accrued expenses	Total accrued expenses
Taxes	$ 125	$ 120
Other	831	775
Total accrued expenses	$ 5,980	$ 6,369