Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue
Net product sales	$ 38,551	$ 22,452	$ 100,914	$ 59,056
Royalty revenue	776	199	2,007	199
Licensing revenue	35	36	857	2,188
Total revenue	39,362	22,687	103,778	61,443
Costs and expenses
Cost of product sales	2,248	1,321	5,628	3,476
Research and development	9,129	4,657	19,690	13,816
Selling, general and administrative	22,900	17,445	65,496	54,554
Total costs and expenses	34,277	23,423	90,814	71,846
Operating income (loss)	5,085	(736)	12,964	(10,403)
Other income (expense)
Interest income	169	78	419	265
Interest expense	(292)	(1,289)	(1,004)	(3,774)
Interest expense - non-recourse liability related to sale of future royalties	(998)	(326)	(2,530)	(326)
Changes in fair value of derivative liabilities	114	760	66	2,115
Loss on extinguishment of debt	(25)	(860)	(2,400)	(2,592)
Other income	5	2	30	2
Total other expense	(1,027)	(1,635)	(5,419)	(4,310)
Earnings (loss) before income taxes	4,058	(2,371)	7,545	(14,713)
Income tax expense	142		453
Net income (loss)	$ 3,916	$ (2,371)	$ 7,092	$ (14,713)
Income (loss) per common share:
Basic	$ 0.08	$ (0.06)	$ 0.15	$ (0.35)
Diluted	$ 0.08	$ (0.06)	$ 0.15	$ (0.35)
Weighted-average number of common shares outstanding:
Basic (in shares)	48,515,071	42,900,269	47,011,243	42,035,025
Diluted (in shares)	51,590,797	42,900,269	51,059,466	42,035,025