| Standard label: | Deferred Gain on Sale of Property |
| Name: | us-gaap:DeferredGainOnSaleOfProperty |
| Documentation: | Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DeferredGainOnSaleOfProperty |
| Label | Role | Language |
| Deferred Gain on Sale of Property | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| Part Of Roll Up: |
| us-gaap:LiabilitiesOtherThanLongtermDebtNoncurrent |