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The amount of payments to the entity that are required to be made to the counterparty based on achievement of milestones under the license or collaboration agreement.

No definition available.

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Data Type:	xbrli:monetaryItemType
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The minimum annual fee the entity is obligated to pay to the counterparty under the license or collaboration agreement.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period of written notice the entity is required to provide for termination of the license or collaboration agreement.

No definition available.

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Amount of a one-time cash payment made to the counterparty upon entering into a license or collaboration agreement.

No definition available.

Name:	crvs_LicenseAndCollaborationAgreementsUpfrontCashPaymentMade
Namespace Prefix:	crvs_
Data Type:	xbrli:monetaryItemType
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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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479402/808-10-50-1

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