| Standard label: | Convertible Preferred Dividends, Net of Tax |
| Name: | us-gaap:ConvertiblePreferredDividendsNetOfTax |
| Documentation: | The after-tax amount of any dividends on convertible preferred stock. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ConvertiblePreferredDividendsNetOfTax |
| Label | Role | Language |
| Convertible Preferred Dividends, Net of Tax | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 260 10 45 16 | http://fasb.org/us-gaap/role/ref/legacyRef | 260 |
| Part Of Roll Up: |
| us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted |