| Standard label: | Preferred Stock, Value, Subscriptions |
| Name: | us-gaap:PreferredStockSharesSubscribedButUnissuedValue |
| Documentation: | Amount of subscription received from investors who have been allocated nonredeemable preferred stock or preferred stock redeemable solely at the option of the issuer. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PreferredStockSharesSubscribedButUnissuedValue |
| Label | Role | Language |
| Preferred Stock, Value, Subscriptions | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(28)) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |