| Standard label: | Common Equity Tier One Capital Required to be Well-Capitalized |
| Name: | us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized |
| Documentation: | Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as well-capitalized under 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:CommonEquityTierOneCapitalRequiredToBeWellCapitalized |
| Label | Role | Language |
| Common Equity Tier One Capital Required to be Well-Capitalized | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 942 505 50 1 (c)(1) | http://www.xbrl.org/2003/role/disclosureRef | 942 |