CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Product sales, net	$ 90,285	$ 104,571
Royalties	162	209
Total revenues	90,447	104,780
Costs and expenses:
Cost of sales (excluding amortization of intangible assets)	17,774	23,549
Research and development expenses	5,084	5,949
Selling, general and administrative expenses	48,519	52,559
Amortization of intangible assets	25,735	27,037
Total costs and expenses	97,112	109,094
Loss from operations	(6,665)	(4,314)
Other (expense) income:
Interest and other income	250	130
Interest expense	(20,124)	(22,727)
Total other expense	(19,874)	(22,597)
Net income (loss) before income taxes	(26,539)	(26,911)
Benefit from income taxes	(202)	5,994
Net loss	$ (26,741)	$ (20,917)
Basic and diluted net loss per share (in dollars per share)	$ (0.43)	$ (0.34)
Shares used in computing basic and diluted net loss per share (in shares)	62,128,862	60,898,186