Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue:
Revenue	$ 1,089,000	$ 2,563,000	$ 3,146,000	$ 4,623,000
Cost of revenue:
Cost of revenue	2,869,000	4,404,000	8,890,000	8,574,000
Gross loss	(1,780,000)	(1,841,000)	(5,744,000)	(3,951,000)
Operating expenses:
Research and development	9,290,000	6,741,000	28,409,000	20,422,000
Sales and marketing	4,138,000	3,615,000	13,140,000	10,936,000
General and administrative	4,571,000	4,853,000	15,163,000	15,378,000
Amortization of intangible assets	114,000	2,398,000	340,000	7,601,000
Change in fair value of contingent consideration	366,000	(416,000)	674,000	(1,168,000)
Impairment of property and equipment	0	0	0	432,000
Total operating expenses	18,479,000	17,191,000	57,726,000	53,601,000
Operating loss	(20,259,000)	(19,032,000)	(63,470,000)	(57,552,000)
Other income (expense), net
Change in fair value of warrant liabilities	2,278,000	0	2,278,000	0
Interest income	406,000	291,000	1,276,000	806,000
Interest expense	0	(99,000)	0	(440,000)
Other expense, net	(686,000)	(29,000)	(1,146,000)	(261,000)
Total other income, net	1,998,000	163,000	2,408,000	105,000
Loss before income taxes	(18,261,000)	(18,869,000)	(61,062,000)	(57,447,000)
Income tax expense	57,000	55,000	136,000	224,000
Net loss	$ (18,318,000)	$ (18,924,000)	$ (61,198,000)	$ (57,671,000)
Net loss per common share attributable to common stockholders - basic and diluted (in dollars per share)	$ (0.07)	$ (0.08)	$ (0.25)	$ (0.24)
Weighted average number of shares used in computing net loss per common share - basic and diluted (in shares)	256,184	236,713	244,744	236,373
Comprehensive loss:
Net loss	$ (18,318,000)	$ (18,924,000)	$ (61,198,000)	$ (57,671,000)
Foreign currency translation (loss) gain	(640,000)	(1,655,000)	84,000	(4,018,000)
Unrealized gain (loss) on available-for-sale investments	67,000	86,000	473,000	(610,000)
Comprehensive loss	(18,891,000)	(20,493,000)	(60,641,000)	(62,299,000)
Product [Member]
Revenue:
Revenue	301,000	1,964,000	892,000	2,565,000
Cost of revenue:
Cost of revenue	1,171,000	3,057,000	4,008,000	4,316,000
Service [Member]
Revenue:
Revenue	295,000	335,000	779,000	1,067,000
Cost of revenue:
Cost of revenue	581,000	365,000	1,849,000	1,506,000
Lease [Member]
Revenue:
Revenue	493,000	264,000	1,475,000	991,000
Cost of revenue:
Cost of revenue	$ 1,117,000	$ 982,000	$ 3,033,000	$ 2,752,000