| Standard label: | Share-based Payment Arrangement, Employee [Member] |
| Name: | us-gaap:ShareBasedPaymentArrangementEmployeeMember |
| Documentation: | Recipient, of award granted under share-based payment arrangement, over whom grantor exercises or has right to exercise sufficient control to establish employer-employee relationship based on law of pertinent jurisdiction. Includes, but is not limited to, nonemployee director treated as employee when acting as member of board of directors, if elected by grantor's shareholders or appointed to board position to be filled by shareholder election when existing term expires. |
| 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:ShareBasedPaymentArrangementEmployeeMember |
| Label | Role | Language |
| Share-based Payment Arrangement, Employee [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 10 50 2 (g) | http://www.xbrl.org/2003/role/exampleRef | 718 |
| FASB Accounting Standards Codification 718 10 35 3 | http://www.xbrl.org/2003/role/disclosureRef | 718 |