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cm:Concept: us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions
Standard label: Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
Name: us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions
Documentation: Disclosure regarding factors used to determine that the impairment of securities categorized as held-to-maturity where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the held-to-maturity investments determined to be temporarily impaired.
Object type: cm:Concept
Data type: Decimal (xbrli:decimalItemType)
Period type: As Of (instant)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions

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Labels
Label Role Language
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 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 (b)(3) http://fasb.org/us-gaap/role/ref/legacyRef 320