Consolidated Statements of Operations (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Products	$ 23,140,000	$ 28,640,000	$ 22,450,000
Services	16,806,000	15,995,000	16,842,000
Revenue, Net, Total	39,946,000	44,635,000	39,292,000
Cost of Revenues:
Cost of products	15,914,000	16,038,000	12,863,000
Cost of services	6,122,000	5,667,000	5,860,000
Cost of Goods and Services Sold, Total	22,036,000	21,705,000	18,723,000
Gross Profit	17,910,000	22,930,000	20,569,000
Operating expenses:
Selling, general and administrative expenses	21,769,000	22,409,000	21,995,000
Research and development expenses	4,389,000	4,341,000	3,534,000
Operating Expenses, Total	26,158,000	26,750,000	25,529,000
Loss from operations	(8,248,000)	(3,820,000)	(4,960,000)
Interest income	635,000	507,000	243,000
Other income, net	51,000	59,000	287,000
Net loss before income taxes	(7,562,000)	(3,254,000)	(4,430,000)
Income tax benefit - sale of NJ net operating losses	63,000	662,000	390,000
Net loss	$ (7,499,000)	$ (2,592,000)	$ (4,040,000)
Net loss per share - basic and diluted (in dollars per share)	$ (0.63)	$ (0.22)	$ (0.36)
Weighted average common shares outstanding - basic and diluted (in shares)	11,912,000	11,744,000	11,162,000