| Standard label: | Share-based Payment Arrangement [Member] |
| Name: | us-gaap:StockCompensationPlanMember |
| Documentation: | Share-based payment arrangement in which award of equity shares are granted. Arrangement includes, but is not limited to, grantor incurring liability for product and service based on price of its shares. |
| 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:StockCompensationPlanMember |
| Label | Role | Language |
| Share-based Payment Arrangement [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 260 10 50 1 (c) | http://www.xbrl.org/2009/role/commonPracticeRef | 260 |