CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
U.S. product sales, net	$ 84,652	$ 22,484	$ 162,067	$ 40,007
License fee, collaboration and other revenues	39,232	2,318	51,322	5,630
Total revenues	123,884	24,802	213,389	45,637
Costs and expenses:
Cost of product sales	19,679	2,743	40,705	5,580
Research and development expenses	8,184	4,540	15,172	11,038
Selling, general and administrative expenses	31,801	16,284	63,913	33,775
Acquisition-related costs	2,653		2,653
Restructuring expenses	443		1,014
Total costs and expenses	62,760	23,567	123,457	50,393
Operating income (loss)	61,124	1,235	89,932	(4,756)
Other income (expense):
Interest expense	(10,205)	(3,051)	(20,572)	(4,527)
Interest and dividend income, net	372	253	443	518
Other Income	2	16	2	116
Total other income (expense)	(9,831)	(2,782)	(20,127)	(3,893)
Net income (loss) before income taxes	51,293	(1,547)	69,805	(8,649)
Income tax expense	18,035		23,643
Net income (loss)	$ 33,258	$ (1,547)	$ 46,162	$ (8,649)
Net Income (Loss) per share:
Basic	$ 1.09	$ (0.07)	$ 1.60	$ (0.40)
Diluted	$ 0.82	$ (0.07)	$ 1.23	$ (0.40)
Weighted average shares outstanding used to compute net income (loss) per share:
Basic	30,636	21,925	28,934	21,875
Diluted	43,181	21,925	40,791	21,875