| Standard label: | Impairment of Leasehold |
| Name: | us-gaap:ImpairmentOfLeasehold |
| Documentation: | The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ImpairmentOfLeasehold |
| Label | Role | Language |
| Impairment of Leasehold | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 28 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 230 |
| FASB Accounting Standards Codification 360 10 45 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 360 |
| Part Of Roll Up: |
| us-gaap:AssetImpairmentCharges |