| Standard label: | Reorganization under Chapter 11 of US Bankruptcy Code Disclosure [Text Block] |
| Name: | us-gaap:ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock |
| Documentation: | The entire disclosure for the description and amounts of reorganization under Chapter 11 of the US Bankruptcy Code. |
| 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:ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock |
| Examples of this text block disclosure: | ReorganizationunderChapter11OfUSBankruptcyCodeDisclosure |
| Label | Role | Language |
| Reorganization under Chapter 11 of US Bankruptcy Code Disclosure [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 852 | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |