Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue
Net product sales	$ 7,591	$ 4,395
Total revenue	7,591	4,395
Operating expenses
Cost of product sales	716	500
Research and development	9,183	21,244
Selling, general and administrative	8,152	12,320
Total operating expenses	18,051	34,064
Loss from operations	(10,460)	(29,669)
Interest expense	(2,406)	(2,729)
Interest income	190	713
Other income—related party	4,100	0
Total other income (expense), net	1,869	(2,016)
Net loss	$ (8,591)	$ (31,685)
Net loss per share, basic and diluted (usd per share)	$ (0.32)	$ (1.17)
Weighted-average common shares outstanding - basic and diluted (in shares)	27,238	27,035