Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Net product sales	$ 60,525	$ 34,046
Cost of goods sold	6,552	4,055
Gross profit	53,973	29,991
Operating expenses:
Research and development	89,120	64,593
Selling, general, and administrative	40,215	44,303
Changes in fair value of contingent consideration payable	931	1,383
Depreciation and amortization	1,764	991
Total operating expenses	132,030	111,270
Loss from operations	(78,057)	(81,279)
Other income (expense):
Interest income	1,515	2,639
Interest expense	(3,729)	(6,454)
Loss on exchange of convertible notes	0	(36,123)
Other (expense) income	(8,316)	1,086
Loss before income tax	(88,587)	(120,131)
Income tax expense	(361)	(168)
Net loss attributable to common stockholders	$ (88,948)	$ (120,299)
Net loss attributable to common stockholders per common share - basic and diluted (in dollars per share)	$ (0.35)	$ (0.56)
Weighted-average common shares outstanding - basic and diluted (in shares)	256,968,248	213,519,287