STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Product revenue, net	$ 2,156,844	$ 2,028,529	$ 7,810,058	$ 7,061,504
Other revenue	7,106	72,435	16,356	231,591
Net revenue	2,163,950	2,100,964	7,826,414	7,293,095
Operating expense:
Cost of revenue	1,648,417	1,571,575	5,555,601	5,349,594
Gross profit	515,533	529,389	2,270,813	1,943,501
Research and development expense	375,442	396,503	1,257,263	1,210,168
Selling, general and administrative expense	772,644	789,169	2,590,596	2,546,334
Loss from operations	(632,553)	(656,283)	(1,577,046)	(1,813,001)
Interest income	379		1,123
Interest expense	(1,623)	(2,056)	(10,748)	(5,093)
Other, net	901		18,001	7,199
Loss before provision for income taxes	(632,896)	(658,339)	(1,568,670)	(1,810,895)
Provision for income taxes
Net loss	$ (632,896)	$ (658,339)	$ (1,568,670)	$ (1,810,895)
Net loss per share - basic and diluted	$ (0.02)	$ (0.02)	$ (0.06)	$ (0.08)
Weighted average number of basic and diluted common shares outstanding	28,468,162	26,960,880	28,467,686	23,139,731