Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Total revenue	$ 8,243	$ 487	$ 10,772	$ 1,276
Operating expenses:
Cost of product sales	(3,621)	(368)	(3,683)	(376)
Research and development expenses	(3,150)	(3,831)	(7,018)	(8,775)
Selling, general and administrative expenses	(12,854)	(10,741)	(24,901)	(26,766)
Total operating expenses	(19,625)	(14,940)	(35,602)	(35,917)
Loss from operations	(11,382)	(14,453)	(24,830)	(34,641)
Other income (expense):
Other income (expense), net	470	(634)	348	164
Interest income	5	16	6	80
Interest expense	(241)	(251)	(463)	(1,275)
Loss on extinguishment of debt				(2,757)
Loss before income taxes	(11,148)	(15,322)	(24,939)	(38,429)
Income tax expense	(606)	(119)	(796)	(271)
Net loss	$ (11,754)	$ (15,441)	$ (25,735)	$ (38,700)
Loss per share
Basic (in dollars per share)	$ (0.29)	$ (1.37)	$ (0.77)	$ (3.73)
Diluted (in dollars per share)	$ (0.29)	$ (1.37)	$ (0.77)	$ (3.73)
Weighted average number of shares:
Basic	40,573,848	11,277,825	33,532,837	10,368,670
Diluted	40,573,848	11,277,825	33,532,837	10,368,670
Product revenue, net
Revenues:
Total revenue	$ 6,940	$ (48)	$ 7,070	$ 108
Collaboration revenue
Revenues:
Total revenue	813	7	2,815	152
Research premium and grant revenue
Revenues:
Total revenue	$ 490	$ 528	$ 887	$ 1,016