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Trade Receivables (Tables)

6 Months Ended

Jun. 30, 2023

Receivables [Abstract]

Summary of Receivables

Receivables from collaborations were as follows (in thousands):


			June 30, 2023
			Billed						Unbilled						Total
U.S. Department of Health and Human Services, net			$	—					$	113					$	113
Royalty receivables from partners			1,958						—						1,958
Total receivables			$	1,958					$	113					$	2,071


			December 31, 2022
			Billed						Unbilled						Total
U.S. Department of Health and Human Services, net			$	7,218					$	284					$	7,502
Royalty receivables from partners			741						—						741
Other collaborations			—						25						25
Total receivables			$	7,959					$	309					$	8,268