CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Net product sales	$ 46,034	$ 16,278	$ 81,776	$ 27,113
Collaborative licensing and development revenue	322	243	574	486
Royalty revenue	809	620	1,478	1,129
Total revenues	47,165	17,141	83,828	28,728
Operating expenses:
Cost of goods sold	19,954	10,214	38,081	21,605
Research and development	5,216	4,857	10,420	10,762
Selling, general and administrative	24,837	14,080	47,426	27,017
Total operating expenses	50,007	29,151	95,927	59,384
Loss from operations	(2,842)	(12,010)	(12,099)	(30,656)
Other (expense) income:
Interest income	61	72	103	145
Interest expense	(2,079)	(1,914)	(4,185)	(3,433)
Loss on early extinguishment of debt	0	0	0	(3,398)
Royalty interest obligation	(136)	(161)	(256)	(247)
Other, net	(41)	(18)	(77)	(22)
Total other expense, net	(2,195)	(2,021)	(4,415)	(6,955)
Loss before income taxes	(5,037)	(14,031)	(16,514)	(37,611)
Income tax benefit	0	0	0	442
Net loss	$ (5,037)	$ (14,031)	$ (16,514)	$ (37,169)
Net loss per share:
Basic and diluted net loss per common share (in dollars per share)	$ (0.14)	$ (0.42)	$ (0.48)	$ (1.13)
Weighted average common shares outstanding:
Basic and diluted (in shares)	35,463	33,083	34,587	32,896