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cm:Concept: us-gaap:DebtSecuritiesAvailableForSaleChangeInValuationTechnique
Standard label: Debt Securities, Available-for-sale, Change in Valuation Technique [true false]
Name: us-gaap:DebtSecuritiesAvailableForSaleChangeInValuationTechnique
Documentation: Indicates (true false) whether valuation technique or approach changed for measuring investment in debt security at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Object type: cm:Concept
Data type: Yes/No (xbrli:booleanItemType)
Period type: As Of (instant)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DebtSecuritiesAvailableForSaleChangeInValuationTechnique

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Labels
Label Role Language
Debt Securities, Available-for-sale, Change in Valuation Technique [true false] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 820 10 50 2 (bbb)(1) http://www.xbrl.org/2003/role/disclosureRef 820