XML 48 R38.htm IDEA: XBRL DOCUMENT
v3.22.1

Liability for Sale of Future Royalties - Schedule of Changes to Liability (Details) - Liability for Sale of Future Royalties - BVF Partners L.P. - BVF Agreement $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 USD ($)
Research and Development Arrangement, Contract to Perform for Others [Line Items] |
Beginning balance, January 1 | $ 5,260
Cash received from BVF | 5,000
Interest accretion | 391
Ending balance, March 31 | $ 10,651

X
- Definition Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability, cash received. + References No definition available. + Details
Name: | rcus_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityCashReceived
Namespace Prefix: | rcus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability, interest accretion. + References No definition available. + Details
Name: | rcus_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityInterestAccretion
Namespace Prefix: | rcus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis=us-gaap_RoyaltyAgreementTermsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=rcus_BvfPartnersLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=rcus_BvfAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |