XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.21.2

Regeneron License and Collaboration Arrangement (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
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 nine months ended September 30, 2021 and 2020 (in thousands):
Nine Months Ended September 30, 2021 |  | Balance at Beginning of Period |  |  | Additions |  |  | Additions (Deductions) (1) |  |  | Balance at End of Period |
Contract liability |  | $ | 13,980 |  |  | $ | 370 |  |  | $ | (4,262 | ) |  | $ | 10,088 |
Nine Months Ended September 30, 2020 |  | Balance at Beginning of Period |  |  | Additions |  |  | Additions (Deductions) (1) |  |  | Balance at End of Period |
Contract asset |  | $ | — |  |  | $ | 10,000 |  |  | $ | (10,000 | ) |  | $ | — |
Contract liability |  | $ | 21,883 |  |  | $ | 10,000 |  |  | $ | (12,493 | ) |  | $ | 19,390 |
(1) Deductions to contract liabilities relate to deferred revenue recognized as revenue during the reporting period.

X
- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration