UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash Flows From Operating Activities:
Net Loss	$ (1,731)	$ (1,750)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	545	160
Stock-based Compensation	251	193
Non-cash Lease Expense from Right of Use Assets	519	485
Amortization of Debt Financing Costs and Accretion of Debt Discount and Premium	219	92
Loss on Disposal of Assets	0	1
Changes in Operating Assets and Liabilities:
Accounts Receivable, net	(193)	238
Inventory	(202)	219
Prepaid and Other Assets	153	505
Accounts Payable	403	1,149
Lease Liabilities	(395)	(336)
Accrued and Other Liabilities	(1,938)	(3,295)
Deferred License Revenue	(11)	(1,537)
Net Cash Used In Operating Activities	(2,380)	(3,876)
Cash Flows From Investing Activities:
Purchase of Investments Available-for-Sale	0	(2,053)
Sale of Investments Available-for-Sale	0	7,500
Purchase of Equipment	(139)	(145)
Net Cash (Used In) Provided by Investing Activities	(139)	5,302
Cash Flows From Financing Activities:
Payments on Insurance Financing Note Payable	(244)	(503)
Payments on Financing Lease Liabilities	(138)	(128)
Proceeds from Issuance of Common Stock	560	0
Net Cash Provided by (Used In) Financing Activities	178	(631)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	0	(3)
Net (Decrease) Increase in Cash and Cash Equivalents	(2,341)	792
Cash and Cash Equivalents at Beginning of Period	8,983	10,102
Cash and Cash Equivalents at End of Period	6,642	10,894
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	234	295
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Issuance of Warrant in connection with the Third Amendment as Debt Issuance Costs	247	0
Change in Unrealized (Loss) Gain on Investments Available-for-Sale	$ 25	$ (3)