Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues	$ 5,771	$ 18,153	$ 11,529	$ 24,539
Operating expenses:
Research and development	23,741	19,079	48,071	34,079
General and administrative	7,232	3,630	14,039	7,097
Total operating expenses	30,973	22,709	62,110	41,176
Loss from operations	(25,202)	(4,556)	(50,581)	(16,637)
Other income (expense):
Interest income	297	104	515	208
Other income (expense), net	50	(62)	3	(117)
Total other income, net	347	42	518	91
Loss before income taxes	(24,855)	(4,514)	(50,063)	(16,546)
(Provision for) benefit from income taxes	(3)	21	(3)	(53)
Net loss	$ (24,858)	$ (4,493)	$ (50,066)	$ (16,599)
Net loss per common share - basic	$ (0.28)	$ (0.09)	$ (0.57)	$ (0.37)
Net loss per common share - diluted	$ (0.28)	$ (0.09)	$ (0.57)	$ (0.37)
Weighted average number of common shares outstanding - basic	87,839,804	48,524,511	87,775,440	45,088,434
Weighted average number of common shares outstanding - diluted	87,839,804	48,524,511	87,775,440	45,088,434
Net loss	$ (24,858)	$ (4,493)	$ (50,066)	$ (16,599)
Other comprehensive loss:
Unrealized loss on marketable securities	(937)	(30)	(3,582)	(15)
Comprehensive loss	(25,795)	(4,523)	(53,648)	(16,614)
Collaboration Revenue [Member]
Revenues	$ 5,771	7,153	$ 11,529	13,539
License Revenue [Member]
Revenues		$ 11,000		$ 11,000