Regeneron License and Collaboration Arrangement (Tables)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Change in Company's Contract Liabilities

The following tables present changes in the Company’s contract liabilities for the three months ended March 31, 2022 and 2021 (in thousands):

Three Months Ended March 31, 2022	Balance at Beginning of Period		Additions (Deductions) (1) (2)			Balance at End of Period
Contract liability	$	4,805	$	(4,805	)	$	—

Three Months Ended March 31, 2021	Balance at Beginning of Period		Additions (Deductions) (1) (2)		Balance at End of Period
Contract liability	$	13,980	$	3,981	$	17,961

(1)Deductions to contract liabilities relate to deferred revenue recognized as revenue during the reporting period.

(2)Additions are the result of a reduction to cumulative revenue recognized as a result of a change in overall estimated costs, primarily due to an extension of time to fulfill the combined performance obligation, which was recorded as a change in estimate during the three months ended March 31, 2021.