CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Net product sales	$ 64,502	$ 57,086
Collaborative licensing and milestone revenue	356	356
Royalty revenue	616	874
Total revenues	65,474	58,316
Operating expenses:
Cost of goods sold	20,278	17,580
Research and development	9,493	5,967
Selling, general and administrative	37,957	31,428
Total operating expenses	67,728	54,975
Income (loss) from operations	(2,254)	3,341
Other (expense) income:
Interest income	252	155
Interest expense	(1,868)	(1,996)
Royalty interest obligation	0	(71)
Other, net	48	(117)
Total other expense, net	(1,568)	(2,029)
Income (loss) before income taxes	(3,822)	1,312
Income tax expense	(32)	(52)
Net income (loss)	$ (3,854)	$ 1,260
Basic and diluted net income (loss) per share of common stock	$ (0.10)	$ 0.03
Weighted average common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic (shares)	37,020	36,235
Weighted Average Number of Shares Outstanding, Diluted (shares)	37,020	41,779