QUARTERLY SELECTED FINANCIAL DATA (UNAUDITED) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Products	$ 7,096,000	$ 6,966,000	$ 5,303,000	$ 3,775,000	$ 6,895,000	$ 11,273,000	$ 4,761,000	$ 5,711,000	$ 23,140,000	$ 28,640,000	$ 22,450,000
Services	4,261,000	4,239,000	4,067,000	4,239,000	3,768,000	4,206,000	3,920,000	4,101,000	16,806,000	15,995,000	16,842,000
Revenue	11,357,000	11,205,000	9,370,000	8,014,000	10,663,000	15,479,000	8,681,000	9,812,000	39,946,000	44,635,000	39,292,000
Cost of revenues:
Cost of products	6,362,000	3,853,000	3,005,000	2,694,000	4,380,000	5,385,000	2,810,000	3,463,000	15,914,000	16,038,000	12,863,000
Cost of services	1,588,000	1,535,000	1,515,000	1,484,000	1,446,000	1,497,000	1,321,000	1,403,000	6,122,000	5,667,000	5,860,000
Cost of Goods and Services Sold, Total	7,950,000	5,388,000	4,520,000	4,178,000	5,826,000	6,882,000	4,131,000	4,866,000	22,036,000	21,705,000	18,723,000
Gross Profit	3,407,000	5,817,000	4,850,000	3,836,000	4,837,000	8,597,000	4,550,000	4,946,000	17,910,000	22,930,000	20,569,000
Selling, general and administrative expenses	5,677,000	4,981,000	5,595,000	5,516,000	5,682,000	5,467,000	5,671,000	5,589,000	21,769,000	22,409,000	21,995,000
Research and development expenses	1,044,000	1,082,000	1,123,000	1,140,000	1,044,000	1,098,000	1,085,000	1,114,000	4,389,000	4,341,000	3,534,000
Other income, net	157,000	170,000	161,000	198,000	181,000	135,000	140,000	110,000	51,000	59,000	287,000
Net (loss) income before income tax benefit	(3,157,000)	(76,000)	(1,707,000)	(2,622,000)	(1,708,000)	2,167,000	(2,066,000)	(1,647,000)	(7,562,000)	(3,254,000)	(4,430,000)
Income tax benefit - sale of NJ net operating losses	63,000	0			662,000				63,000	662,000	390,000
Net (loss) income	$ (3,094,000)	$ (76,000)	$ (1,707,000)	$ (2,622,000)	$ (1,046,000)	$ 2,167,000	$ (2,066,000)	$ (1,647,000)	$ (7,499,000)	$ (2,592,000)	$ (4,040,000)
Net loss per share - basic and diluted (in dollars per share)	$ (0.26)	$ (0.01)	$ (0.14)	$ (0.22)	$ (0.09)	$ 0.18	$ (0.18)	$ (0.14)	$ (0.63)	$ (0.22)	$ (0.36)