Statements of Operations (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Statement [Abstract]
Revenues	$ 360,000	$ 2,945,000
Cost of revenues	835,000	2,726,000
Gross income (loss)	(475,000)	219,000
Operating expenses
Research and development	466,000	563,000
Selling, general & administrative	1,254,000	1,448,000
Total operating expenses	1,720,000	2,011,000
Operating loss	(2,195,000)	(1,792,000)
Other income and (expense)
Interest and other income (expense)	(20,000)	(15,000)
Total other income and (expense)	(20,000)	(15,000)
Net loss	$ (2,215,000)	$ (1,807,000)
Basic and diluted loss per share	$ (0.05)	$ (0.06)
Weighted average number of common shares outstanding	42,765,000	31,482,000