| Standard label: | Capital Leases in Financial Statements of Lessee Disclosure [Text Block] |
| Name: | us-gaap:CapitalLeasesInFinancialStatementsOfLesseeDisclosureTextBlock |
| Documentation: | The entire disclosure for capital leasing arrangements including, but not limited to, the following: a) the basis on which contingent rental payments are determined; (b) the existence and terms of renewal or purchase options and escalation clauses; (c) restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. |
| Object type: | cm:Level1TextBlock |
| Data type: | Text Block (HTML) (nonnum:textBlockItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CapitalLeasesInFinancialStatementsOfLesseeDisclosureTextBlock |
| Examples of this text block disclosure: | CapitalLeasesInFinancialStatementsOfLesseeDisclosure |
| Label | Role | Language |
| Capital Leases in Financial Statements of Lessee Disclosure [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 840 30 | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 840 |