| Standard label: | Preferred Stock, Including Additional Paid in Capital, Net of Discount |
| Name: | us-gaap:PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount |
| Documentation: | Aggregate par value plus amounts in excess of par or issuance value (in cases of no-par value stock) for nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) issued and outstanding, net of discount on shares. Aggregate for preferred stock issued and outstanding. |
| 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:PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount |
| Label | Role | Language |
| Preferred Stock, Including Additional Paid in Capital, Net of Discount | http://www.xbrl.org/2003/role/label | en-US |
| Preferred Stock, Including Additional Paid in Capital, Net of Discount, Total | http://www.xbrl.org/2003/role/totalLabel | 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 |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(30)(a)(1)) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 505 10 S99 2 (SX 210.4-07) | http://fasb.org/us-gaap/role/ref/legacyRef | 505 |