Unaudited Condensed Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue	$ 3,965	$ 12,117
Operating expenses:
Royalty and direct contract acquisition costs	8	1,000
Research and development	3,082	2,265
General and administrative	2,734	1,892
Total operating expenses	5,824	5,157
(Loss) income from operations	(1,859)	6,960
Other (expense) income:
Loss on extinguishment of debt	0	(16,885)
Interest expense related to amortization of debt issuance costs and discount	0	(150)
Interest expense on principal	(5)	(199)
Fair value adjustment related to derivative and warrant liability	241	(30)
Interest and other (expense) income, net	(245)	8
Total other expenses	(9)	(17,256)
Loss before income taxes	(1,868)	(10,296)
Income tax benefit	4	0
Net income (loss)	(1,864)	(10,296)
Deemed dividend	0	(37,444)
Net loss attributable to common stockholders	$ (1,864)	$ (47,740)
Basic and diluted net loss per share of common stock:
Net loss attributable to common stockholders (in dollars per share)	$ (0.05)	$ (2.49)
Weighted average number of shares of common stock outstanding:
Basic and diluted (in shares)	34,506,597	19,146,270