CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue:
Product revenue	$ 11,659,239	$ 4,358,392	$ 21,001,840	$ 7,508,920
Royalty and other revenue	3,864,581	3,295,333	7,346,441	6,051,190
Total revenue	15,523,820	7,653,725	28,348,281	13,560,110
Operating expenses:
Cost of product revenue	7,345,257	1,552,809	12,617,800	2,945,898
Cost of royalty and other revenue	536,933	415,870	999,021	792,761
Research and development	2,905,658	3,517,461	5,714,121	7,301,732
Selling, general and administrative	3,418,233	2,289,118	6,846,769	4,727,754
Gain on bargain purchase			(314,244)
Total operating expenses	14,206,081	7,775,258	25,863,467	15,768,145
Income (loss) from operations	1,317,739	(121,533)	2,484,814	(2,208,035)
Investment income	29,516	65,936	60,940	135,235
Interest expense	(27,360)		(49,741)	(13,484)
Other income	458,298		567,559
Income (loss) before income taxes	1,778,193	(55,597)	3,063,572	(2,086,284)
Income tax provision	208,230		267,137
Net income (loss)	1,569,963	(55,597)	2,796,435	(2,086,284)
Earnings (loss) per share:
Basic	$ 0.05	$ 0.00	$ 0.09	$ (0.07)
Diluted	$ 0.05	$ 0.00	$ 0.09	$ (0.07)
Weighted average shares outstanding:
Basic	30,845,137	30,812,257	30,787,399	30,802,397
Diluted	31,149,090	30,812,257	31,072,445	30,802,397
Comprehensive income (loss)	$ (159,166)	$ (55,597)	$ 2,155,131	$ (2,086,284)