| Standard label: | Contract Receivable Retainage, Description |
| Name: | us-gaap:ContractReceivableRetainageDescription |
| Documentation: | Explanation of the nature and status of amounts included within receivable balances billed but not paid by customers under retainage provisions in contracts. |
| 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:ContractReceivableRetainageDescription |
| Label | Role | Language |
| Contract Receivable Retainage, Description | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.3(c)(1)) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 910 310 50 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 910 |