| Standard label: | Employee Benefit and Share-based Payment Arrangement, Noncash |
| Name: | us-gaap:EmployeeBenefitsAndShareBasedCompensationNoncash |
| Documentation: | Amount of noncash expense (reversal of expense) for employee benefits and share-based payment arrangement. Includes, but is not limited to, pension, other postretirement, postemployment and termination benefits. |
| 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:EmployeeBenefitsAndShareBasedCompensationNoncash |
| Label | Role | Language |
| Employee Benefit and Share-based Payment Arrangement, Noncash | http://www.xbrl.org/2003/role/label | en-US |
| Employee Benefit and Share-based Payment Arrangement, Noncash, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 28 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 230 |
| Part Of Roll Up: |
| us-gaap:AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities |