Statements Of Operations (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Revenue:
Product revenue	$ 9,321,042	$ 9,061,931
Other revenue	329,745	399,253
Total revenue	9,650,787	9,461,184
Operating expense:
Cost of revenue	7,322,247	6,935,287
Gross profit	2,328,540	2,525,897
Research and development expense	1,737,201	1,614,923
Selling, general and administrative expense	3,954,750	4,311,562
Agreement termination charges		700,000
Loss from operations	(3,363,411)	(4,100,588)
Interest income	3,928	22,581
Interest expense	(4,012)	(2,326)
Other, net	(42)	2,479
Loss before provision for income taxes	(3,363,537)	(4,077,854)
Provision for income taxes
Net loss	$ (3,363,537)	$ (4,077,854)
Net loss per share-basic and diluted	$ (0.16)	$ (0.19)
Weighted average number of basic and diluted common shares outstanding	21,206,036	21,204,162