Consolidated Statements of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2012 Successor [Member]	Dec. 31, 2013 Successor [Member]	Sep. 28, 2012 Predecessor [Member]	Dec. 31, 2011 Predecessor [Member]
Revenues:
Net product sales	$ 237,338	$ 1,062,453	$ 780,797	$ 887,495
Other product related revenues	8,801	35,014	23,071	38,643
Total revenues	246,139	1,097,467	803,868	926,138
Cost of goods sold, excluding amortization expense	157,893	595,166	431,174	526,288
Amortization expense	42,801	184,258	30,344	13,106
Total cost of goods sold	200,694	779,424	461,518	539,394
Gross margin	45,445	318,043	342,350	386,744
Operating expenses:
Research and development	19,383	100,763	66,606	46,538
Selling, general and administrative	45,525	155,164	165,604	173,378
Intangible asset impairment	0	100,093	5,700	0
Settlements and loss contingencies, net	10,059	25,650	45,000	190,560
Restructuring costs	241	1,816	0	26,986
Total operating expenses	75,208	383,486	282,910	437,462
Gain on sale of product rights and other	0	0	0	125
Operating (loss) income	(29,763)	(65,443)	59,440	(50,593)
Gain on marketable securities and other investments, net	0	1,122	0	237
Gain on bargain purchase	5,500	0	0	0
Interest income	50	87	424	736
Interest expense	(25,985)	(95,484)	(9,159)	(2,676)
Loss on debt extinguishment	0	(7,335)	0	0
(Loss) income from continuing operations before (benefit) provision for income taxes	(50,198)	(167,053)	50,705	(52,296)
(Benefit) provision for income taxes	(17,682)	(61,182)	29,447	(5,996)
(Loss) income from continuing operations	(32,516)	(105,871)	21,258	(46,300)
Discontinued operations:
Provision (benefit) for income taxes	29	0	83	(20,155)
(Loss) income from discontinued operations	(29)	0	(83)	20,155
Net (loss) income	$ (32,545)	$ (105,871)	$ 21,175	$ (26,145)