| Standard label: | Stockholders' Equity Note Disclosure [Text Block] |
| Name: | us-gaap:StockholdersEquityNoteDisclosureTextBlock |
| Documentation: | The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. |
| 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:StockholdersEquityNoteDisclosureTextBlock |
| Examples of this text block disclosure: | StockholdersEquityNoteDisclosure |
| Label | Role | Language |
| Stockholders' Equity Note Disclosure [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 505 | http://fasb.org/us-gaap/role/ref/legacyRef | 505 |