| Standard label: | Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Period Increase (Decrease) |
| Name: | us-gaap:LoansReceivableHeldForSaleReconciliationToCashFlowPeriodIncreaseDecrease |
| Documentation: | Amount, after allowance for bad debt, of increase (decrease) in loan receivables held-for-sale that are not part of a disposal group. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LoansReceivableHeldForSaleReconciliationToCashFlowPeriodIncreaseDecrease |
| Label | Role | Language |
| Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Period Increase (Decrease) | http://www.xbrl.org/2003/role/label | en-US |
| Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Period Increase (Decrease), Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 310 10 45 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |