CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash Flows From Operating Activities:
Net Loss	$ (18,679)	$ (32,674)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	576	668
Stock-based Compensation	315	943
Increase in Inventory Reserves	610	146
Amortization of Right of Use Asset	2,013	1,847
Amortization of Debt Financing Costs and Accretion of Debt Discount	369	369
Loss on Disposal of Assets	(3)	8
Realized Loss on Sale of Investments Available-for-Sale	(4)	0
Foreign Currency Translation Adjustment	(3)	2
Changes in Assets and Liabilities:
Increase in Accounts Receivable, net	(346)	(1,742)
Increase in Inventory	(2,101)	(656)
Decrease in Other Assets	2,720	1,823
(Decrease) Increase in Accounts Payable	314	(416)
Decrease in Lease Liability	(1,903)	(1,771)
(Decrease) Increase in Other Liabilities	2,534	(48)
Decrease in Deferred License Revenue	(3,826)	(2,033)
Changes in Assets and Liabilities	(2,608)	(4,843)
Cash Used In Operating Activities	(17,414)	(33,534)
Cash Flows From Investing Activities:
Purchase of Investments Available-for-Sale	(21,297)	(26,058)
Sale of Investments Available-for-Sale	19,182	26,891
Purchase of Equipment	(281)	(522)
Cash (Used In) Provided By Investing Activities	(2,396)	311
Cash Flows From Financing Activities:
Payments on Short Term Note Payable	(1,443)	(1,530)
Payments on Debt	(11,750)	(750)
Proceeds from issuance of Common Stock for payment related to services provided	0	107
Repurchase of Common Stock to Pay Employee Withholding Taxes	0	(6)
Cash Provided By (Used in) Financing Activities	16,632	(2,179)
Decrease In Cash and Cash Equivalents	(3,178)	(35,402)
Cash and Cash Equivalents At Beginning Of Period	13,280	48,682
Cash and Cash Equivalents At End Of Period	10,102	13,280
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	1,470	1,827
Supplemental Disclosure of Noncash Investing Activities:
Change in Unrealized Loss on Marketable Securities Available-for-Sale	114	(6)
Insurance Financing Note Payable	503	437
Fair Value of Warrants issued related to Debt Financing	501	501
Public offering
Cash Flows From Financing Activities:
Proceeds from the Issuance of Common Stock	15,016	0
Offering Costs from the Issuance of Common Stock	(106)	0
At -the-market
Cash Flows From Financing Activities:
Proceeds from the Issuance of Common Stock	15,000	0
Offering Costs from the Issuance of Common Stock	$ (85)	$ 0