| Standard label: | Subsequent Events [Text Block] |
| Name: | us-gaap:SubsequentEventsTextBlock |
| Documentation: | The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. |
| 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:SubsequentEventsTextBlock |
| Examples of this text block disclosure: | SubsequentEvents |
| Label | Role | Language |
| Subsequent Events [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 855 | http://fasb.org/us-gaap/role/ref/legacyRef | 855 |