| Standard label: | Deferred Compensation Arrangement with Individual, Shares Issued |
| Name: | us-gaap:DeferredCompensationArrangementWithIndividualSharesIssued |
| Documentation: | Number of shares issued pursuant to the terms of a deferred compensation arrangement. |
| Object type: | cm:Concept |
| Data type: | Shares (xbrli:sharesItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DeferredCompensationArrangementWithIndividualSharesIssued |
| Label | Role | Language |
| Deferred Compensation Arrangement with Individual, Shares Issued | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 10 50 2 (l) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |