CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
REVENUES	$ 12,484,331	$ 12,291,551	$ 12,414,579
COST OF REVENUES	(4,339,772)	(4,297,158)	(4,329,349)
Gross profit	8,144,559	7,994,393	8,085,230
OPERATING EXPENSES
Selling	1,896,747	2,380,979	2,018,366
General and administrative	3,922,024	5,181,005	3,873,348
Research and development	2,608,020	2,979,047	2,710,078
Total operating expenses	8,426,791	10,541,031	8,601,792
Loss from operations	(282,232)	(2,546,638)	(516,562)
OTHER INCOME (EXPENSE)
Interest income	40	87	2,443
Interest expense	(8,667)	(24,808)	(10,000)
Other expense	0	(1,864)	(1,396)
Other Nonoperating Income (Expense)	(8,627)	(26,585)	(8,953)
Loss before income taxes	(290,859)	(2,573,223)	(525,515)
Provision for income taxes	0	0	0
Net loss	$ (290,859)	$ (2,573,223)	$ (525,515)
Net loss per common share
Basic (in dollars per share)	$ (0.01)	$ (0.10)	$ (0.02)
Diluted (in dollars per share)	$ (0.01)	$ (0.10)	$ (0.02)
Weighted average common shares used in computing per share amounts
Basic (in shares)	27,247,558	26,645,897	25,673,015
Diluted (in shares)	27,247,558	26,645,897	25,673,015