STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Revenues	$ 543,000	$ 2,531,000	$ 903,000	$ 5,476,000
Cost of revenues	746,000	1,948,000	1,582,000	4,674,000
Gross income (loss)	(203,000)	583,000	(679,000)	802,000
Operating expenses
Research and development	338,000	441,000	804,000	1,004,000
Selling, general & administrative	1,145,000	1,414,000	2,398,000	2,862,000
Total operating expenses	1,483,000	1,855,000	3,202,000	3,866,000
Operating loss	(1,686,000)	(1,272,000)	(3,881,000)	(3,064,000)
Other income and (expense)
Interest and other income (expense)	(101,000)	(78,000)	(121,000)	(93,000)
Total other income and (expense)	(101,000)	(78,000)	(121,000)	(93,000)
Net loss	$ (1,787,000)	$ (1,350,000)	$ (4,002,000)	$ (3,157,000)
Basic and diluted loss per share	$ (0.04)	$ (0.04)	$ (0.09)	$ 0.10
Weighted average number of common shares outstanding	43,977,000	31,513,000	43,371,000	31,497,000