Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Revenue	$ 1,102	$ 655	$ 3,185	$ 1,255
Cost of revenue:
Cost of revenue	2,347	1,413	5,459	3,151
Gross loss	(1,245)	(758)	(2,274)	(1,896)
Operating Expenses:
Research and development	4,089	4,257	8,304	8,191
Sales and marketing	3,562	2,901	6,615	7,154
General and administrative	3,848	3,619	7,840	6,968
Amortization of intangible assets	2,862	2,619	5,729	5,183
Change in fair value of contingent consideration	478	212	735	1,268
Restructuring and other charges	0	0	0	858
Total Operating Expenses	14,839	13,608	29,223	29,622
Operating Loss	(16,084)	(14,366)	(31,497)	(31,518)
Other Income (Expense)
Gain on extinguishment of debt	2,847	0	2,847	0
Change in fair value of warrant liabilities	0	(114)	(1,981)	(269)
Interest income	79	4	131	31
Interest expense	(5)	0	(12)	0
Other expense, net	(7)	(55)	(36)	(70)
Total Other Income (Expense), net	2,914	(165)	949	(308)
Loss before income taxes	(13,170)	(14,531)	(30,548)	(31,826)
Income tax (expense) benefit	(2)	691	36	1,388
Net loss	(13,172)	(13,840)	(30,512)	(30,438)
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		(299)	0	(299)
Net loss attributable to common stockholders	(13,172)	(14,139)	(30,512)	(31,149)
Comprehensive loss:
Net loss	(13,172)	(13,840)	(30,512)	(30,438)
Foreign currency translation gain (loss)	472	962	(1,466)	90
Comprehensive loss	$ (12,700)	$ (12,878)	$ (31,978)	$ (30,348)
Net loss per common share attributable to common stockholders - basic and diluted (in dollars per share)	$ (0.06)	$ (0.27)	$ (0.14)	$ (0.77)
Weighted average number of shares used in computing net loss per common share - basic and diluted (in shares)	233,250	52,351	219,199	40,628
Product [Member]
Revenue:
Revenue	$ 696	$ 315	$ 2,400	$ 557
Cost of revenue:
Cost of revenue	1,478	720	3,858	1,633
Service [Member]
Revenue:
Revenue	406	340	785	698
Cost of revenue:
Cost of revenue	$ 869	$ 693	$ 1,601	$ 1,518