Collaboration Agreements (Tables)

3 Months Ended

Mar. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Collaboration Revenue

Revenue disaggregated by collaboration agreement and performance obligation is as follows (in thousands):

	Three Months Ended March 31,
	2020		2019
Takeda Collaboration Agreement(1)	$	3,018	$	682
Sanofi Collaboration Agreement
Alzheimer's Disease Services(1)	52		94
Retained Activities	534		3,429
Total Sanofi Collaboration Revenue	586		3,523
Total Collaboration Revenue	$	3,604	$	4,205

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(1)Amounts represent revenue recognized during the period that was included in the contract liability balance at the beginning of the period.