CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Total revenue	$ 1,528	$ 1,824	$ 2,981	$ 3,601
Costs and expenses:
Cost of revenue	1,068	1,263	2,223	2,465
Research and development	18,779	7,897	33,085	15,735
General and administrative	6,075	5,870	12,174	10,697
Revaluation of contingent consideration	(3,400)	4,800	(4,600)	21,239
Total costs and expenses	22,522	19,830	42,882	50,136
Loss from operations	(20,994)	(18,006)	(39,901)	(46,535)
Other income (expense), net	462	(155)	580	(380)
Net loss	$ (20,532)	$ (18,161)	$ (39,321)	$ (46,915)
Net loss per share, basic	$ (0.31)	$ (0.34)	$ (0.62)	$ (0.90)
Net loss per share, diluted	$ (0.31)	$ (0.34)	$ (0.62)	$ (0.90)
Weighted average common shares outstanding, basic	65,990,031	53,968,405	63,723,123	52,163,136
Weighted average common shares outstanding, diluted	65,990,031	53,968,405	63,723,123	52,163,136
Other comprehensive loss:
Unrealized loss on marketable securities, net of tax of $0	$ (354)	$ 25	$ (1,101)	$ (10)
Foreign currency translation adjustment		(69)		(80)
Total other comprehensive loss	(354)	(44)	(1,101)	(90)
Comprehensive loss	(20,886)	(18,205)	(40,422)	(47,005)
Contract research
Revenues:
Total revenue	1,218	1,606	2,439	3,141
Other revenue
Revenues:
Total revenue	$ 310	$ 218	$ 542	$ 460