Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Total revenues	$ 63,038	$ 27,859
Expenses:
Cost of goods sold	20,078	19,392
Research and development	6,900	8,737
Selling, general and administrative	74,669	79,716
Gain on foreign currency translation	(1,913)	(4,468)
Total expenses	107,635	104,454
Loss from operations	(44,597)	(76,595)
Other (expense) income:
Interest income	997	501
Interest expense on notes	(6,304)	(5,116)
Interest expense on promissory notes	(4,602)	(4,323)
Gain (loss) on extinguishment of debt	3,529	(765)
Other expense	(926)	(437)
Total other expense	(7,306)	(10,140)
Loss before income tax expense	(51,903)	(86,735)
Provision for income taxes	0	240
Net loss	$ (51,903)	$ (86,975)
Net loss per share — basic and diluted	$ (0.27)	$ (0.60)
Shares used to compute net loss per share — basic and diluted	195,584	144,136
Commercial product sales
Revenues:
Total revenues	$ 25,304	$ 17,276
Collaborations and services
Revenues:
Total revenues	37,734	10,583
Expenses:
Cost of revenue	$ 7,901	$ 1,077