| Standard label: | Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset |
| Name: | us-gaap:FairValueDisclosureOffbalanceSheetRisksAmountAsset |
| Documentation: | The fair value of financial assets, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FairValueDisclosureOffbalanceSheetRisksAmountAsset |
| Label | Role | Language |
| Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 825 10 50 10 | http://www.xbrl.org/2003/role/disclosureRef | 825 |