Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue:
Products	$ 4,918,000	$ 4,993,000	$ 11,200,000	$ 11,864,000
Services	3,986,000	4,933,000	8,181,000	9,182,000
Revenue, Net, Total	8,904,000	9,926,000	19,381,000	21,046,000
Cost of revenue:
Cost of products	3,142,000	3,491,000	7,328,000	8,714,000
Cost of services	1,037,000	2,309,000	2,130,000	4,258,000
Cost of Goods and Services Sold, Total	4,179,000	5,800,000	9,458,000	12,972,000
Gross profit	4,725,000	4,126,000	9,923,000	8,074,000
Operating expenses:
Selling, general and administrative expenses	5,019,000	6,225,000	9,805,000	12,994,000
Research and development expenses	1,192,000	1,120,000	2,322,000	2,349,000
Operating Expenses, Total	6,211,000	7,345,000	12,127,000	15,343,000
Loss from operations	(1,486,000)	(3,219,000)	(2,204,000)	(7,269,000)
Interest income	76,000	92,000	153,000	179,000
Interest expense	(87,000)		(144,000)
Other income, net		(15,000)		3,000
Net loss	$ (1,497,000)	$ (3,142,000)	$ (2,195,000)	$ (7,087,000)
Net loss per share - basic and diluted	$ (0.12)	$ (0.25)	$ (0.17)	$ (0.57)
Weighted average common shares outstanding - basic and diluted	12,939,000	12,575,000	12,917,000	12,398,000