UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash Flows From Operating Activities:
Net Loss	$ (12,128)	$ (16,152)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	279	385
Stock-based Compensation	(82)	197
Increase in Inventory Reserves	10	89
Amortization of Right of Use Asset	1,027	857
Amortization of Debt Financing Costs and Accretion of Debt Discount	184	184
(Gain) Loss on Disposal of Assets	(2)	8
Realized (Gain) Loss on Sale of Investments Available-for-Sale	(4)	1
Foreign Currency Translation Adjustment	(3)	3
Changes in Assets and Liabilities:
Increase in Accounts Receivable, net	(2,177)	(1,186)
Increase in Inventory	(1,063)	(799)
Decrease in Prepaid and Other Assets	1,275	1,293
(Decrease) Increase in Accounts Payable	(797)	777
Decrease in Lease Liability	(969)	(839)
Decrease in Other Liabilities	(385)	(1,163)
Decrease in Deferred License Revenue	(883)	(1,088)
Changes in Assets and Liabilities	(4,999)	(3,005)
Cash Used In Operating Activities	(15,718)	(17,433)
Cash Flows From Investing Activities:
Purchase of Investments Available-for-Sale	(2,810)	(13,765)
Sale of Investments Available-for-Sale	11,972	15,181
Purchase of Equipment	(80)	(281)
Cash Provided By Investing Activities	9,082	1,135
Cash Flows From Financing Activities:
Payments on Debt	(5,250)	0
Payments on Short Term Note Payable	(439)	0
Proceeds from the Issuance of Common Stock	15,016	0
Offering Costs from the Issuance of Common Stock	106	0
Proceeds from the Issuance of Preferred Shares	15,000	0
Offering Costs from the Issuance of Preferred Stock	(85)	0
Repurchase of Common Stock to Pay Employee Withholding Taxes	0	(6)
Cash Provided by (Used In) Financing Activities	24,136	(6)
Increase (Decrease) in Cash and Cash Equivalents	17,500	(16,304)
Cash and Cash Equivalents at Beginning of Period	13,280	48,682
Cash and Cash Equivalents at End of Period	30,780	32,378
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	998	982
Supplemental Disclosure of Noncash Investing and Financing Activities:
Change in Unrealized Loss on Marketable Securities Available-for-Sale	$ 0	$ (7)