Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Total revenue	$ 789	$ 1,703
Operating expenses:
Cost of product sales	(8)
Research and development expenses	(4,944)	(7,538)
Selling, general and administrative expenses	(16,025)	(13,409)
Total operating expenses	(20,977)	(20,947)
Loss from operations	(20,188)	(19,244)
Other income (expense):
Other income (expense), net	798	70
Interest income	64	10
Interest expense	(1,024)	(899)
Loss on extinguishment of debt	(2,757)
Loss before income taxes	(23,107)	(20,063)
Income tax expense	(152)	(154)
Net loss	$ (23,259)	$ (20,217)
Loss per share
Basic and Diluted ($ per share)	$ (0.25)	$ (0.29)
Weighted average number of shares:
Basic and Diluted	94,595,152	68,701,599
Product revenue, net
Revenues:
Total revenue	$ 156
Collaboration revenue
Revenues:
Total revenue	145	$ 1,000
Research premium and grant revenue
Revenues:
Total revenue	$ 488	$ 703