CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue:
Product revenue	$ 11,123,236	$ 5,741,920	$ 32,125,076	$ 13,250,840
Royalty and other revenue	3,981,059	2,889,458	11,327,500	8,940,648
Total revenue	15,104,295	8,631,378	43,452,576	22,191,488
Operating expenses:
Cost of product revenue	6,418,962	2,092,815	19,036,762	5,038,713
Cost of royalty and other revenue	594,406	418,419	1,593,427	1,211,180
Research and development	2,433,043	3,074,625	8,147,164	10,376,357
Selling, general and administrative	3,126,244	2,493,093	9,973,013	7,220,847
Contingent consideration - fair value adjustments	343,932		343,932
Gain on bargain purchase			(314,244)
Total operating expenses	12,916,587	8,078,952	38,780,054	23,847,097
Income (loss) from operations	2,187,708	552,426	4,672,522	(1,655,609)
Investment income	95,807	52,247	156,747	187,482
Interest expense	7,205		(42,536)	(13,484)
Other income (expense)	(500,414)		67,145
Income (loss) before income taxes	1,790,306	604,673	4,853,878	(1,481,611)
Income tax provision (benefit)	(16,183)		250,954
Net income (loss)	1,806,489	604,673	4,602,924	(1,481,611)
Earnings (loss) per share:
Basic	$ 0.06	$ 0.02	$ 0.15	$ (0.05)
Diluted	$ 0.06	$ 0.02	$ 0.15	$ (0.05)
Weighted average shares outstanding:
Basic	30,948,062	30,796,797	30,841,344	30,800,510
Diluted	31,256,273	30,933,832	31,131,749	30,800,510
Comprehensive income (loss)	$ 3,913,569	$ 607,360	$ 6,068,700	$ (1,478,924)