UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows From Operating Activities:
Net Income (Loss) Attributable to Parent	$ (1,750)	$ (7,162)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	160	138
Stock-based Compensation	193	(179)
Non-cash lease expense from Right of Use Asset	485	520
Amortization of Debt Financing Costs and Accretion of Debt Discount	92	92
Loss on Disposal of Assets	1	0
Realized Gain on Sale of Investments Available-for-Sale	0	(4)
Changes in operating Assets and Liabilities:
Accounts Receivable, net	238	(1,208)
Inventory	219	(1,455)
Prepaid and Other Assets	505	630
Accounts Payable	1,149	485
Lease Liability	(336)	(490)
Other Liabilities	(3,295)	(640)
Deferred License Revenue	(1,537)	(538)
Changes in operating Assets and Liabilities	(3,057)	(3,216)
Cash Used In Operating Activities	(3,876)	(9,811)
Cash Flows From Investing Activities:
Purchase of Investments Available-for-Sale	(2,053)	(2,810)
Sale of Investments Available-for-Sale	7,500	11,972
Purchase of Equipment	(145)	(29)
Cash Provided by Investing Activities	5,302	9,133
Cash Flows From Financing Activities:
Payments on Debt	0	(2,250)
Payments on Insurance Financing Note Payable	(503)	(437)
Payment on Financing Lease Liabilities	(128)	0
Cash Used In Financing Activities	(631)	(2,687)
Effect of exchange rate changes on cash	(3)	(1)
Increase (Decrease) in Cash and Cash Equivalents	792	(3,366)
Cash and Cash Equivalents at Beginning of Period	10,102	13,280
Cash and Cash Equivalents at End of Period	10,894	9,914
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	295	461
Supplemental Disclosure of Noncash Investing and Financing Activities:
Change in Unrealized Loss on Marketable Securities Available-for-Sale	$ (3)	$ 0