| Standard label: | Retention Payable | 
| Name: | us-gaap:RetentionPayable | 
| Documentation: | Amounts owed to vendors and subcontractors that have been withheld because of retainage provisions in a contract. | 
| Object type: | cm:Concept | 
| Data type: | Monetary (xbrli:monetaryItemType) | 
| Period type: | As Of (instant) | 
| Balance type: | Credit | 
| Abstract: | false | 
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:RetentionPayable | 
| Label | Role | Language | 
| Retention Payable | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic |