CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Product sales, net	$ 95,204	$ 110,303	$ 285,721	$ 331,391
Royalties	209	221	596	595
Total revenues	95,413	110,524	286,317	331,986
Costs and expenses:
Cost of sales (excluding amortization of intangible assets)	17,396	20,243	54,895	64,757
Research and development expenses	1,761	10,412	12,459	23,477
Selling, general and administrative expenses	48,850	51,574	147,379	156,036
Amortization of intangible assets	25,734	27,037	77,204	81,111
Restructuring charges	434		3,875
Total costs and expenses	94,175	109,266	295,812	325,381
(Loss) Income from operations	1,238	1,258	(9,495)	6,605
Other (expense) income:
Interest and other income	72	113	604	310
Loss on prepayment of Senior Notes			(5,364)	(5,777)
Interest expense	(17,815)	(20,307)	(55,697)	(63,182)
Total other expense	(17,743)	(20,194)	(60,457)	(68,649)
Net income (loss) before income taxes	(16,505)	(18,936)	(69,952)	(62,044)
Benefit from income taxes	513	6,042	560	17,692
Net loss	$ (15,992)	$ (12,894)	$ (69,392)	$ (44,352)
Basic and diluted net loss per share (in dollars per share)	$ (0.25)	$ (0.21)	$ (1.11)	$ (0.73)
Shares used in computing basic and diluted net loss per share (in shares)	62,997,484	61,422,015	62,555,921	61,163,059