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cm:Concept: us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherVintage
Standard label: Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Initial Investment
Name: us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherVintage
Documentation: Date the initial investment in available-for-sale investment in unrealized loss position, in CCYY-MM-DD format.
Object type: cm:Concept
Data type: Date (xbrli:dateItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherVintage

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Labels
Label Role Language
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Initial Investment http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 320 10 50 6 http://fasb.org/us-gaap/role/ref/legacyRef 320