CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash Flows From Operating Activities:
Net Loss	$ (32,674)	$ (30,890)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	668	834
Stock-based Compensation	943	475
Warrant Modification Expense	0	837
Increase in Inventory Reserves	146	305
Amortization of Right of Use Asset	1,847	1,455
Amortization of Debt Financing Costs and Accretion of Debt Discount	369	294
Loss on Disposal of Assets	8	7
Realized Loss on Sale of Investments Available-for-Sale	0	(8)
Foreign Currency Translation Adjustment	2	8
Changes in Assets and Liabilities:
(Increase) Decrease in Accounts Receivable, net	(1,742)	32
Increase in Inventory	(656)	(1,306)
Decrease in Other Assets	1,823	76
(Decrease) Increase in Accounts Payable	(416)	1,136
Decrease in Settlement Payable	0	(104)
Decrease in Lease Liability	(1,771)	(1,439)
(Decrease) Increase in Other Liabilities	(48)	534
Decrease in Deferred License Revenue	(2,033)	(1,887)
Changes in Assets and Liabilities	(4,843)	(2,958)
Cash Used In Operating Activities	(33,534)	(29,641)
Cash Flows From Investing Activities:
Purchase of Investments Available-for-Sale	(26,058)	(29,307)
Sale of Investments Available-for-Sale	26,891	33,565
Purchase of Equipment	(522)	(1,046)
Cash Provided By Investing Activities	311	3,212
Cash Flows From Financing Activities:
Proceeds from Term Loan	0	22,500
Debt Issuance Costs	0	(1,343)
Payments on Short Term Note Payable	(1,530)	(763)
Payments on Debt	(750)	0
Proceeds from issuance of Common Stock for payment related to services provided	107	0
Repurchase of Common Stock to Pay Employee Withholding Taxes	(6)	(19)
Cash (Used in) Provided By Financing Activities	(2,179)	63,316
(Decrease) Increase In Cash and Cash Equivalents	(35,402)	36,887
Cash and Cash Equivalents At Beginning Of Period	48,682	11,795
Cash and Cash Equivalents At End Of Period	13,280	48,682
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	1,827	1,558
Supplemental Disclosure of Noncash Investing Activities:
Change in Unrealized Loss on Marketable Securities Available-for-Sale	(6)	(3)
Insurance Financing Note Payable	437	0
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	0	43,148
Offering Costs from the Issuance of Common Stock	0	(2,469)
At -the-market
Cash Flows From Financing Activities:
Proceeds from the Issuance of Common Stock	0	2,325
Offering Costs from the Issuance of Common Stock	$ 0	$ (63)