| Standard label: | Schedule of Impaired Financing Receivable [Table] |
| Name: | us-gaap:ScheduleOfImpairedFinancingReceivableTable |
| Documentation: | Schedule of the recorded investment, unpaid principal balance, associated allowance, average recorded investment, accounting policies, and interest income recognized on the accrual and cash basis for impaired financing receivables by class of financing receivable. |
| Object type: | cm:Table |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ScheduleOfImpairedFinancingReceivableTable |
| Label | Role | Language |
| Schedule of Impaired Financing Receivable [Table] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 310 10 50 15 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |