| Standard label: | Inventory, Interest Capitalization Policy [Policy Text Block] |
| Name: | us-gaap:InventoryInterestCapitalizationPolicy |
| Documentation: | Disclosure of accounting policy for (i) capitalizing to inventory the interest costs incurred on land development, home construction, and building construction projects, (ii) charging such capitalized costs against earnings, including identification of the line item captions reflecting such expense (typically cost of sales), and (iii) allocating such costs to projects. |
| Object type: | cm:Level2TextBlock |
| 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:InventoryInterestCapitalizationPolicy |
| Label | Role | Language |
| Inventory, Interest Capitalization Policy [Policy Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 235 10 50 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |
| FASB Accounting Standards Codification 835 20 15 8 | http://fasb.org/us-gaap/role/ref/legacyRef | 835 |