| Standard label: | Tier One Leverage Capital Required for Capital Adequacy |
| Name: | us-gaap:TierOneLeverageCapitalRequiredForCapitalAdequacy |
| Documentation: | The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. |
| 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:TierOneLeverageCapitalRequiredForCapitalAdequacy |
| Label | Role | Language |
| Tier One Leverage Capital Required for Capital Adequacy | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 942 505 50 1H (c)(2) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| FASB Accounting Standards Codification 942 505 50 1 (c)(1) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |