Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Products	$ 6,490,000	$ 4,561,000	$ 17,199,000	$ 15,761,000
Services	4,596,000	3,654,000	12,592,000	11,835,000
Revenue, Net, Total	11,086,000	8,215,000	29,791,000	27,596,000
Cost of revenue:
Cost of products	3,475,000	3,018,000	9,717,000	10,346,000
Cost of services	1,984,000	1,195,000	4,756,000	3,325,000
Cost of Goods and Services Sold, Total	5,459,000	4,213,000	14,473,000	13,671,000
Gross profit	5,627,000	4,002,000	15,318,000	13,925,000
Operating expenses:
Selling, general and administrative expenses	5,213,000	4,984,000	15,184,000	14,789,000
Research and development expenses	958,000	1,098,000	3,050,000	3,420,000
Operating Expenses, Total	6,171,000	6,082,000	18,234,000	18,209,000
Loss from operations	(544,000)	(2,080,000)	(2,916,000)	(4,284,000)
Interest income	59,000	65,000	169,000	218,000
Interest expense	(100,000)	(78,000)	(248,000)	(222,000)
Other income, net	(1,000)	1,000	(1,000)	1,000
Net loss	$ (586,000)	$ (2,092,000)	$ (2,996,000)	$ (4,287,000)
Net loss per share - basic and diluted	$ (0.04)	$ (0.16)	$ (0.21)	$ (0.33)
Weighted average common shares outstanding -basic and diluted	16,190,000	13,004,000	14,311,000	12,946,000