Unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue
Product sales, net	$ 195	$ 102	$ 497	$ 242
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Other revenue	$ 1	$ 7	$ 8	$ 22
Total revenue	196	109	505	264
Cost of revenue
Cost of revenue	$ 101	$ 86	$ 313	$ 169
Cost, Product and Service [Extensible Enumeration]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit	$ 95	$ 23	$ 192	$ 95
Operating expenses
Selling, general and administrative expenses	3,393	2,859	8,673	9,800
Research and development expenses	751	1,489	3,468	4,182
Amortization expense	47	48	141	153
Goodwill impairment	757		757
Total operating expenses	4,948	4,396	13,039	14,135
Loss from operations	(4,853)	(4,373)	(12,847)	(14,040)
Nonoperating income (expense)
Interest expense, net	(919)		(919)
Change in fair value of derivative liability	5,489		5,489
Foreign exchange (loss) gain	(747)	(314)	(910)	10
Other income, net			1
Nonoperating income (expense), net	3,823	(314)	3,661	10
Loss before provision for income taxes	(1,030)	(4,687)	(9,186)	(14,030)
Provision for income taxes
Net loss	(1,030)	(4,687)	(9,186)	(14,030)
Other comprehensive income (loss)
Foreign currency translation adjustments	744	287	893	(26)
Comprehensive loss	$ (286)	$ (4,400)	$ (8,293)	$ (14,056)
Net loss per share
Basic	$ (0.12)	$ (2.01)	$ (0.52)	$ (6.29)
Diluted	$ (0.12)	$ (2.01)	$ (0.52)	$ (6.29)
Weighted average number of common shares outstanding
Basic	8,543,303	2,326,893	17,761,752	2,229,422
Diluted	8,543,303	2,326,893	17,761,752	2,229,422