Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue:
Revenue	$ 2,571	$ 814	$ 5,756	$ 2,068
Cost of revenue:
Cost of revenue	3,350	1,423	8,809	4,573
Gross loss	(779)	(609)	(3,053)	(2,505)
Operating Expenses:
Research and development	4,469	4,673	12,773	12,867
Sales and marketing	3,551	3,136	10,166	10,291
General and administrative	5,557	3,462	13,397	10,426
Amortization of intangible assets	2,804	2,780	8,533	7,964
Change in fair value of contingent consideration	278	502	1,013	1,770
Restructuring and other charges	0	0	0	858
Total Operating Expenses	16,659	14,553	45,882	44,176
Operating Loss	(17,438)	(15,162)	(48,935)	(46,681)
Other Income (Expense)
Gain on extinguishment of debt	0	0	2,847	0
Change in fair value of warrant liabilities	0	63	(1,981)	(206)
Interest income	122	3	253	34
Interest expense	(65)	0	(77)	0
Employee retention tax credit	1,311	0	1,311	0
Other income (expense), net	33	16	(3)	(54)
Total Other Income (Expense), net	1,401	82	2,350	(226)
Loss before income taxes	(16,037)	(15,080)	(46,585)	(46,907)
Income tax (expense) benefit	(32)	(2)	4	1,386
Net loss	(16,069)	(15,082)	(46,581)	(45,521)
Deemed dividend related to beneficial conversion feature of preferred stock	0	0	0	(412)
Deemed dividend related to conversion of preferred stock into common stock	0	0	0	(299)
Net loss attributable to common stockholders	(16,069)	(15,082)	(46,581)	(46,232)
Comprehensive loss:
Net loss	(16,069)	(15,082)	(46,581)	(45,521)
Foreign currency translation (loss) gain	(931)	2,101	(2,397)	2,191
Unrealized loss on available-for-sale investments	(53)	0	(53)	0
Comprehensive loss	$ (17,053)	$ (12,981)	$ (49,031)	$ (43,330)
Net loss per common share attributable to common stockholders - basic and diluted (in dollars per share)	$ (0.07)	$ (0.15)	$ (0.21)	$ (0.77)
Weighted average number of shares used in computing net loss per common share - basic and diluted (in shares)	234,337	97,538	224,300	59,737
Product [Member]
Revenue:
Revenue	$ 2,176	$ 436	$ 4,576	$ 992
Cost of revenue:
Cost of revenue	2,659	720	6,517	2,353
Service [Member]
Revenue:
Revenue	395	378	1,180	1,076
Cost of revenue:
Cost of revenue	$ 691	$ 703	$ 2,292	$ 2,220