| Standard label: | Noninterest Expense Related to Performance Fees |
| Name: | us-gaap:NoninterestExpenseRelatedToPerformanceFees |
| Documentation: | Incentive fees which are compensation paid to a trading advisor or to any practitioner who achieves investment results above a specified contractual level. |
| 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:NoninterestExpenseRelatedToPerformanceFees |
| Label | Role | Language |
| Noninterest Expense Related to Performance Fees | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 942 220 S99 1 (SX 210.9-04.14) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |