| Standard label: | Real Estate Inventory, Capitalized Interest Costs |
| Name: | us-gaap:RealEstateInventoryCapitalizedInterestCosts |
| Documentation: | Carrying amount as of the balance sheet date of interest costs that were capitalized to properties under development during the land development and construction period of a project, and which are included in inventory. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:RealEstateInventoryCapitalizedInterestCosts |
| Label | Role | Language |
| Real Estate Inventory, Capitalized Interest Costs | http://www.xbrl.org/2003/role/label | en-US |
| Real Estate Inventory, Capitalized Interest Costs, Ending Balance | http://www.xbrl.org/2003/role/periodEndLabel | en-US |
| Real Estate Inventory, Capitalized Interest Costs, Beginning Balance | http://www.xbrl.org/2003/role/periodStartLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 835 20 50 1 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 835 |
| Part Of Roll Up: |
| us-gaap:InventoryOperativeBuilders |