| Standard label: | Contract Cost, Unapproved Change Order, Description |
| Name: | us-gaap:UnapprovedChangeOrdersDescription |
| Documentation: | Description of nature and status of item comprising cost incurred on construction contract for unapproved order and basis on which item is recorded. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:UnapprovedChangeOrdersDescription |
| Label | Role | Language |
| Contract Cost, Unapproved Change Order, Description | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 910 20 50 1 (a) | http://www.xbrl.org/2003/role/disclosureRef | 910 |