Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Revenue		$ 746	$ 1,142	$ 1,966	$ 1,945
Cost of revenue:
Cost of revenue	[1]	593	908	1,393	1,602
Gross profit		153	234	573	343
Operating expenses:
Research and development	[1]	380	225	775	434
Sales and marketing	[1]	1,733	2,780	3,848	5,144
General and administrative	[1]	1,866	1,534	3,576	2,789
Total operating expenses		3,979	4,539	8,199	8,367
Loss from operations		(3,826)	(4,305)	(7,626)	(8,024)
Interest income (expense), net		1	(2)	9	5
Other income (expense), net		(6)	(7)	80	(11)
Net loss		$ (3,831)	$ (4,314)	$ (7,537)	$ (8,030)
Net loss per share - basic and diluted		$ (0.04)	$ (0.06)	$ (0.08)	$ (0.11)
Weighted average common shares used to compute basic and diluted net loss per common share		98,123,789	76,205,894	97,707,904	75,860,411
Product [Member]
Revenue:
Revenue		$ 743	$ 1,100	$ 1,953	$ 1,879
Cost of revenue:
Cost of revenue	[1]	589	698	1,384	1,214
Service [Member]
Revenue:
Revenue		3	42	13	66
Cost of revenue:
Cost of revenue	[1]	$ 4	$ 210	$ 9	$ 388

[1] Non-cash stock-based compensation expense included in cost of revenue and operating expenses