Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues:
Product sales, net	$ 72,216	$ 43,838	$ 185,583	$ 117,649
Royalties	792	630	2,304	1,909
Contract revenues	285	285	854	854
Total revenues	73,293	44,753	188,741	120,412
Operating expenses:
Cost of product sales (excluding amortization of acquired developed technology)	3,901	3,091	10,080	8,775
Selling, general and administrative	30,547	18,040	72,552	51,926
Research and development	3,279	7,317	10,356	21,494
Intangible asset amortization	1,862	1,862	5,586	5,963
Total operating expenses	39,589	30,310	98,574	88,158
Income from operations	33,704	14,443	90,167	32,254
Interest income and other, net	4	(3)	6	3
Interest expense (including $570 for the nine months ended September 30, 2010 pertaining to a related party)	(129)	(1,197)	(1,565)	(11,651)
Loss on extinguishment of debt (including $701 for the nine months ended September 30, 2010 pertaining to a related party)	(1,097)		(1,097)	(12,287)
Net income	$ 32,482	$ 13,243	$ 87,511	$ 8,319
Net income per share:
Basic	$ 0.77	$ 0.34	$ 2.12	$ 0.24
Diluted	$ 0.69	$ 0.32	$ 1.88	$ 0.22
Weighted-average common shares used in computing net income per share:
Basic	42,028	38,965	41,206	35,294
Diluted	47,241	41,737	46,577	38,233