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
Revenue from royalty agreement		30,000		30,000
Licensing revenue	35	36	857	2,188
Total revenue	38,586	52,488	101,771	91,244
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	17,343	65,637	54,452
Total costs and expenses	34,277	23,321	90,955	71,744
Operating income	4,309	29,167	10,816	19,500
Other income (expense)
Interest income	169	78	419	265
Interest expense	(292)	(1,289)	(1,004)	(3,774)
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	(29)	(1,309)	(2,889)	(3,984)
Earnings before income taxes	4,280	27,858	7,927	15,516
Income tax expense	58		782
Net income	$ 4,222	$ 27,858	$ 7,145	$ 15,516
Income per common share:
Basic	$ 0.09	$ 0.65	$ 0.15	$ 0.37
Diluted	$ 0.08	$ 0.39	$ 0.15	$ 0.13
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	50,825,633	51,059,466	50,378,186