Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flows from Operating Activities:
Net loss	$ (18,773)	$ (10,879)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:
Depreciation and amortization	369	281
Provision for bad debts	56	(162)
Provision for inventory excess and obsolescence	(245)	0
Inventory write-offs and disposals	1,486	(117)
Amortization of discounts on lines of credit	71	126
Amortization of debt issuance costs	126	290
Patent litigation mark-to-market	0	190
Issuance of Restricted Shares	0	164
Stock-based compensation	1,691	1,488
Gain on debt forgiveness	0	(3,014)
Changes in operating assets and liabilities:
Accounts receivable	(664)	(417)
Inventory	(5,229)	(2,788)
Prepaid expenses and other current assets	(850)	235
Accounts payable and accrued liabilities	664	705
Deferred revenue	(371)	292
Net cash and cash equivalents used in operating activities	(21,179)	(13,606)
Cash Flows from Investing Activities:
Purchases of property, plant, and equipment	(3,256)	(396)
Net cash and cash equivalents used in investing activities	(3,256)	(396)
Cash Flows from Financing Activities:
Proceeds from the sale of common stock	5,635	13,291
Payments of equity offering costs		(6)
Principal payment on loan	(1,000)
Proceeds from the exercise of common stock warrants		16,560
Payment of debt issuance costs	0	(25)
Proceeds from exercise of stock options	0	66
Net cash and cash equivalents provided by financing activities	4,635	29,886
Effect of exchange rate changes	(415)	(171)
(Decrease) increase in cash, cash equivalents and restricted cash	(20,215)	15,713
Cash, cash equivalents and restricted cash, beginning of period	30,175	17,876
Cash, cash equivalents and restricted cash, end of period	9,960	33,589
Supplemental cash flow disclosure:
Cash paid for interest	1,110	1,328
Cash received for interest	23	44
Cash paid for income taxes	39	154
Cash paid for operating leases	219	185
Non-cash settlement of liability	0	510
Non-cash right-of-use assets obtained in exchange for lease obligation	562	48
Deemed dividend on preferred stock	$ 217	$ 546