| Standard label: | SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Period Increase (Decrease) |
| Name: | us-gaap:RealEstatePeriodIncreaseDecrease |
| Documentation: | Amount of increase (decrease) before accumulated depreciation of real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:RealEstatePeriodIncreaseDecrease |
| Label | Role | Language |
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Period Increase (Decrease) | http://www.xbrl.org/2003/role/label | en-US |
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Period Increase (Decrease), Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 970 360 S99 1 (SX 210.12-28) | http://www.xbrl.org/2009/role/commonPracticeRef | 970 |