Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue:
Total revenue	$ 8,644,000	$ 6,551,000
Cost of revenue:
Amortization and depreciation	79,000	97,000
Total cost of revenue	2,355,000	2,041,000
Gross profit	6,289,000	4,510,000
Operating expenses:
Engineering and product development	2,192,000	2,211,000
Marketing and sales	3,424,000	3,608,000
General and administrative	2,151,000	2,532,000
Amortization and depreciation	55,000	52,000
Total operating expenses	7,822,000	8,403,000
Loss from operations	(1,533,000)	(3,893,000)
Interest expense	(112,000)	(130,000)
Other income	2,000	42,000
Loss on extinguishment of debt		(341,000)
Loss on fair value of convertible debentures		(7,464,000)
Other expense, net	(110,000)	(7,893,000)
Loss before income tax expense	(1,643,000)	(11,786,000)
Tax expense	0	(26,000)
Net loss and comprehensive loss	$ (1,643,000)	$ (11,812,000)
Net loss per share:
Basic	$ (0.07)	$ (0.59)
Diluted	$ (0.07)	$ (0.59)
Weighted average number of shares used in computing loss per share:
Basic	23,929	20,175
Diluted	23,929	20,175
Product [Member]
Revenue:
Total revenue	$ 5,557,000	$ 3,795,000
Cost of revenue:
Total cost of revenue	1,409,000	1,017,000
Service [Member]
Revenue:
Total revenue	3,087,000	2,756,000
Cost of revenue:
Total cost of revenue	$ 867,000	$ 927,000