Consolidated Statements of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Sep. 28, 2012
Successor [Member]
Revenues:
Net product sales	$ 237,338	$ 1,278,106	$ 1,062,453
Other product related revenues	8,801	30,515	35,014
Total revenues	246,139	1,308,621	1,097,467
Cost of goods sold, excluding amortization expense	157,893	643,851	595,166
Amortization expense	42,801	185,655	184,258
Total cost of goods sold	200,694	829,506	779,424
Gross margin	45,445	479,115	318,043
Operating expenses:
Research and development	19,383	119,095	100,763
Selling, general and administrative	45,525	181,136	155,164
Intangible asset impairment	0	146,934	100,093
Settlements and loss contingencies, net	10,059	90,107	25,650
Restructuring costs	241	5,413	1,816
Total operating expenses	75,208	542,685	383,486
Loss on sale of product rights		(3,042)	0
Operating (loss) income	(29,763)	(66,612)	(65,443)
Gain on marketable securities and other investments, net	0	0	1,122
Gain on bargain purchase	5,500	0	0
Interest income	50	18	87
Interest expense	(25,985)	(108,427)	(95,484)
Loss on debt extinguishment	0	(3,989)	(7,335)
Other income	0	500	0
(Loss) income before (benefit) provision for income taxes	(50,198)	(178,510)	(167,053)
(Benefit) provision for income taxes	(17,653)	(72,993)	(61,182)
Net (loss) income	(32,545)	(105,517)	(105,871)
Predecessor [Member]
Revenues:
Net product sales				780,797
Other product related revenues				23,071
Total revenues				803,868
Cost of goods sold, excluding amortization expense				431,174
Amortization expense				30,344
Total cost of goods sold				461,518
Gross margin				342,350
Operating expenses:
Research and development				66,606
Selling, general and administrative				165,604
Intangible asset impairment				5,700
Settlements and loss contingencies, net				45,000
Restructuring costs				0
Total operating expenses				282,910
Operating (loss) income				59,440
Gain on marketable securities and other investments, net				0
Gain on bargain purchase				0
Interest income				424
Interest expense				(9,159)
Loss on debt extinguishment				0
Other income				0
(Loss) income before (benefit) provision for income taxes				50,705
(Benefit) provision for income taxes				29,530
Net (loss) income				$ 21,175