Trade Receivables (Tables)

9 Months Ended

Sep. 30, 2022

Receivables [Abstract]

Summary of Receivables

Receivables from collaborations were as follows (in thousands):

	September 30, 2022
	Billed		Unbilled		Total
U.S. Department of Health and Human Services	$	293	$	243	$	536
Shionogi & Co. Ltd.	1,893		—		1,893
Royalty receivables from partners	588		—		588
Total receivables	$	2,774	$	243	$	3,017

	December 31, 2021
	Billed		Unbilled		Total
U.S. Department of Health and Human Services	$	5	$	1,670	$	1,675
Royalty receivables from partners	305		—		305
Total receivables	$	310	$	1,670	$	1,980