CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Revenues	$ 146,254	$ 130,371	$ 263,642	$ 242,912
Costs and expenses:
Research and development expenses	11,693	30,258	22,502	46,747
Acquired in-process research and development	0	5,845	20,000	65,845
Selling, general and administrative expenses	15,898	58,900	89,329	107,523
Total costs and expenses	104,367	127,104	272,519	279,790
Operating income (loss)	41,887	3,267	(8,877)	(36,878)
Other (expense) income:
Interest expense	(16,056)	(17,256)	(32,034)	(35,556)
Loss on debt extinguishment	0	(9,516)	0	(9,516)
Interest and dividend income	952	663	1,595	1,695
Other expense	(44)	(69)	(44)	(43)
Total other expense, net	(15,148)	(26,178)	(30,483)	(43,420)
Income (loss) from continuing operations before income taxes	26,739	(22,911)	(39,360)	(80,298)
Income tax expense (benefit)	52,556	(8,659)	44,556	(30,120)
Net loss from continuing operations	(25,817)	(14,252)	(83,916)	(50,178)
Discontinued operations:
Income from discontinued operations	7,158	373	13,036	494
Income tax expense	1,422	187	3,444	942
Net income (loss) from discontinued operations	5,736	186	9,592	(448)
Net loss	$ (20,081)	$ (14,066)	$ (74,324)	$ (50,626)
Basic and diluted net (loss) income per share:
Loss from continuing operations (in dollars per share)	$ (0.75)	$ (0.41)	$ (2.45)	$ (1.44)
Income (loss) from discontinued operations (in dollars per share)	0.17	0.01	0.28	(0.01)
Basic and diluted net loss per share (in dollars per share)	$ (0.58)	$ (0.40)	$ (2.17)	$ (1.45)
Weighted average shares outstanding used to compute net loss per share:
Weighted average shares outstanding used to compute net loss per share (basic and diluted) (in shares)	34,358	35,145	34,261	34,764
Product Sales
Revenues:
Revenues	$ 146,219	$ 130,342	$ 263,567	$ 242,859
Costs and expenses:
Cost of product sales	76,776	32,101	140,688	59,675
Other revenues
Revenues:
Revenues	$ 35	$ 29	$ 75	$ 53