| Standard label: | Fees Paid on Acceptances Resold |
| Name: | us-gaap:FeesPaidOnAcceptancesResold |
| Documentation: | Represents the amortization to expense from discounts on short-term negotiable time drafts drawn on and accepted by an institution (also known as Banker's Acceptances) which have been resold in the secondary market. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FeesPaidOnAcceptancesResold |
| Label | Role | Language |
| Fees Paid on Acceptances Resold | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 942 210 S99 1 14 | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |