| Standard label: | Share-based Payment Arrangement, Expensed and Capitalized, Amount |
| Name: | us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 |
| Documentation: | Amount of cost expensed and capitalized for award under share-based payment arrangement. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 |
| Label | Role | Language |
| Share-based Payment Arrangement, Expensed and Capitalized, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Share-based Payment Arrangement, Expensed and Capitalized, Amount, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 10 50 2 (h)(1) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |