Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expenses (gains):
Research and development	$ 44,996	$ 29,991	$ 86,876	$ 56,397
Research and development related success payments and contingent consideration	(76,025)	51,906	51,025	52,820
General and administrative	12,477	6,009	24,298	11,964
Total operating expenses (gains)	(18,552)	87,906	162,199	121,181
Gain (loss) from operations	18,552	(87,906)	(162,199)	(121,181)
Interest income, net	130	79	251	474
Other income, net	1	19	14	24
Net income (loss)	$ 18,683	$ (87,808)	$ (161,934)	$ (120,683)
Net income (loss) per share - basic	$ 0.10	$ (7.18)	$ (1.08)	$ (10.47)
Weighted-average number of common shares - basic	179,899	12,232	149,683	11,526
Net income (loss) per share - diluted	$ 0.09	$ (7.18)	$ (1.08)	$ (10.47)
Weighted-average number of common shares - diluted	190,508	12,232	149,683	11,526