Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Products	$ 4,993,000	$ 7,161,000	$ 11,864,000	$ 12,951,000
Services	4,933,000	4,252,000	9,182,000	8,198,000
Revenue, Net, Total	9,926,000	11,413,000	21,046,000	21,149,000
Cost of revenue:
Cost of products	3,491,000	4,769,000	8,714,000	8,071,000
Cost of services	2,309,000	1,520,000	4,258,000	2,970,000
Cost of Goods and Services Sold, Total	5,800,000	6,289,000	12,972,000	11,041,000
Gross profit	4,126,000	5,124,000	8,074,000	10,108,000
Operating expenses:
Selling, general and administrative expenses	6,225,000	5,651,000	12,994,000	12,471,000
Research and development expenses	1,120,000	1,343,000	2,349,000	2,493,000
Operating Expenses, Total	7,345,000	6,994,000	15,343,000	14,964,000
Loss from operations	(3,219,000)	(1,870,000)	(7,269,000)	(4,856,000)
Interest income	92,000	153,000	179,000	305,000
Other income, net	(15,000)	12,000	3,000	15,000
Net loss	$ (3,142,000)	$ (1,705,000)	$ (7,087,000)	$ (4,536,000)
Net loss per share - basic and diluted (in dollars per share)	$ (0.25)	$ (0.14)	$ (0.57)	$ (0.38)
Weighted average common shares outstanding - basic and diluted (in shares)	12,575,000	12,089,000	12,398,000	12,054,000