Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Total revenue	$ 5,567	$ 7,329	$ 12,118	$ 14,102
Cost of revenue:
Amortization and depreciation	98	100	195	194
Total cost of revenue	1,210	1,603	3,251	3,094
Gross profit	4,357	5,726	8,867	11,008
Operating expenses:
Engineering and product development	1,878	2,139	4,089	4,266
Marketing and sales	2,631	3,120	6,239	5,693
General and administrative	2,110	1,858	4,642	3,404
Amortization and depreciation	49	67	101	137
Total operating expenses	6,668	7,184	15,071	13,500
Loss from operations	(2,311)	(1,458)	(6,204)	(2,492)
Interest expense	(115)	(202)	(245)	(411)
Other income	33	64	75	123
Loss on extinguishment of debt			(341)
Loss on fair value of convertible debentures		(1,915)	(7,464)	(4,440)
Other expense, net	(82)	(2,053)	(7,975)	(4,728)
Loss before income tax expense	(2,393)	(3,511)	(14,179)	(7,220)
Tax expense	(5)	(19)	(31)	(27)
Net loss and comprehensive loss	$ (2,398)	$ (3,530)	$ (14,210)	$ (7,247)
Net loss per share:
Basic	$ (0.11)	$ (0.20)	$ (0.67)	$ (0.42)
Diluted	$ (0.11)	$ (0.20)	$ (0.67)	$ (0.42)
Weighted average number of shares used in computing loss per share:
Basic	22,396	17,640	21,275	17,422
Diluted	22,396	17,640	21,275	17,422
Product [Member]
Revenue:
Total revenue	$ 2,888	$ 4,353	$ 6,683	$ 8,175
Cost of revenue:
Total cost of revenue	537	645	1,554	1,325
Service [Member]
Revenue:
Total revenue	2,679	2,976	5,435	5,927
Cost of revenue:
Total cost of revenue	$ 575	$ 858	$ 1,502	$ 1,575