Condensed Consolidated Statements Of Operations (USD $)	3 Months Ended		120 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012
Operating expenses:
Research and development	$ 8,699,119	$ 11,458,942	$ 154,459,542
Sales and marketing	4,968,762	1,111,131	21,993,338
General and administrative	1,920,111	1,332,716	27,143,784
Total operating expenses	15,587,992	13,902,789	203,596,664
Operating loss	(15,587,992)	(13,902,789)	(203,596,664)
Interest income	28,774	34,582	4,970,293
Interest expense			(258,348)
Net loss	$ (15,559,218)	$ (13,868,207)	$ (198,884,719)
Net loss per basic and diluted share of common stock	$ (0.23)	$ (0.25)
Weighted average number of basic and diluted common shares outstanding	66,429,178	54,860,538