Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Expenses:
Research and development	$ 17,787	$ 15,373
General and administrative	14,473	14,944
Loss on impairment of intangible assets	45,020	0
Total operating expenses	77,280	30,317
Operating loss	(77,280)	(30,317)
Interest income	91	122
Interest expense	(114)	(125)
Other expense, net	(320)	(2,246)
Total other expense, net	(343)	(2,249)
Loss before income taxes	(77,623)	(32,566)
Deferred income tax benefit	9,987	0
Net loss	$ (67,636)	$ (32,566)
Net loss per common share
Basic and diluted (in dollars per share)	$ (2.73)	$ (2.08)
Weighted average number of common shares outstanding
Basic and diluted (in shares)	24,760	15,654