| Standard label: | Financing Receivable, Originated Four Years before Latest Fiscal Year |
| Name: | us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear |
| Documentation: | Amount of financing receivable originated four years prior to latest fiscal year. |
| 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:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear |
| Label | Role | Language |
| Financing Receivable, Originated Four Years before Latest Fiscal Year | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 326 20 50 6 | http://www.xbrl.org/2003/role/disclosureRef | 326 |
| FASB Accounting Standards Codification 326 20 55 79 | http://www.xbrl.org/2003/role/exampleRef | 326 |