| Standard label: | Common Stock Issued, Employee Trust, Deferred |
| Name: | us-gaap:CommonStockIssuedEmployeeTrustDeferred |
| Documentation: | Aggregate value of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CommonStockIssuedEmployeeTrustDeferred |
| Label | Role | Language |
| Common Stock Issued, Employee Trust, Deferred | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 710 10 25 16 | http://fasb.org/us-gaap/role/ref/legacyRef | 710 |
| FASB Accounting Standards Codification 710 10 25 17 | http://fasb.org/us-gaap/role/ref/legacyRef | 710 |