Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Total revenues	$ 7,062	$ 4,476
Costs and expenses:
Cost of product sales	1,356	738
Research and development	4,932	4,562
Selling, general and administrative	27,060	26,340
Total operating expenses	33,348	31,640
Loss from operations	(26,286)	(27,164)
Other (income) expense:
Interest income	(332)	(684)
Interest expense	2,863	2,388
Foreign currency losses	39	6
Net loss	$ (28,856)	$ (28,874)
Net loss per share of common stock, basic and diluted (in USD per share)	$ (0.63)	$ (0.70)
Weighted average common shares outstanding, basic and diluted (in shares)	45,906,162	41,256,050
Net product revenues
Total revenues	$ 7,062	$ 3,976
Licensing revenues
Total revenues	$ 0	$ 500