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cm:Concept: us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Standard label: Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Name: us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Documentation: The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.
Object type: cm:Concept
Data type: Shares (xbrli:sharesItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod

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Labels
Label Role Language
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 718 10 50 2 (c)(1)(iv)(3) http://fasb.org/us-gaap/role/ref/legacyRef 718

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Roll Up Relations
Part Of Roll Up:
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod