| Standard label: | Government Contracts Concentration Risk [Member] |
| Name: | us-gaap:GovernmentContractsConcentrationRiskMember |
| Documentation: | Reflects the percentage that revenues in the period from one or more significant customers is to net revenues, as defined by the entity, such as total net revenues, product line revenues, segment revenues. Risk is the materially adverse effects of termination of a significant contract or group of contracts or from future loss of a significant portion of business with a specified political body or unit thereof, such as Department of Defense, US Navy, New York City. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:GovernmentContractsConcentrationRiskMember |
| Label | Role | Language |
| Government Contracts Concentration Risk [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 275 10 50 18 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 275 |