Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Revenues, net	$ 20,389,491	$ 9,757,078	$ 38,364,091	$ 20,460,198
Cost of revenues	7,913,346	4,293,348	15,508,799	9,973,890
Gross profit	12,476,145	5,463,730	22,855,292	10,486,308
Operating expenses:
Selling, general and administrative	9,892,325	7,688,379	18,556,413	12,244,801
Research and development	10,279,529	7,511,201	19,579,657	12,266,879
Total operating expenses	20,171,854	15,199,580	38,136,070	24,511,680
Loss from operations	(7,695,709)	(9,735,850)	(15,280,778)	(14,025,372)
Other income (expense):
Foreign exchange gain (loss)	133,889	(406,486)	726,214	(773,500)
Interest expense	(2,646,558)	(971)	(5,252,030)	(971)
Investment income, net	127,902	161,258	295,100	273,479
Other, net	(15,552)		(15,552)
Loss before income taxes	(10,096,028)	(9,982,049)	(19,527,046)	(14,526,364)
Provision for income taxes
Net loss	$ (10,096,028)	$ (9,982,049)	$ (19,527,046)	$ (14,526,364)
Net loss per common share - basic and diluted	$ (0.73)	$ (0.73)	$ (1.40)	$ (1.09)
Weighted average shares outstanding - basic and diluted	13,923,258	13,682,734	13,911,993	13,322,531