| Standard label: | Convertible Debt [Table Text Block] |
| Name: | us-gaap:ConvertibleDebtTableTextBlock |
| Documentation: | Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. |
| Object type: | cm:Level3TextBlock |
| 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:ConvertibleDebtTableTextBlock |
| Examples of this text block disclosure: | ConvertibleDebt |
| Label | Role | Language |
| Convertible Debt [Table Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |