| Standard label: | Labor Force Concentration Risk [Member] |
| Name: | us-gaap:LaborForceConcentrationRiskMember |
| Documentation: | Reflects the percentage that specified components of the labor force, stated in either labor costs for the period or number of personnel as of the balance sheet date or on average for the period, are to a specified benchmark, such as total operating expenses, total labor costs, total number of personnel. Risk is the materially adverse effects from an increase in costs or a diminution in available personnel of an existing labor force that is essential to the entity. |
| 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:LaborForceConcentrationRiskMember |
| Label | Role | Language |
| Labor Force Concentration Risk [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 275 10 50 18 (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 275 |