| Standard label: | Unbilled Change Orders |
| Name: | us-gaap:UnbilledChangeOrders |
| Documentation: | Total amount of unbilled change orders from customers under long-term contracts or programs associated with unpriced change orders or other similar items subject to uncertainty concerning their determination or ultimate realization. |
| 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:UnbilledChangeOrders |
| Label | Role | Language |
| Unbilled Change Orders | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 210 |