| Standard label: | Amount of Regulatory Assistance Received |
| Name: | us-gaap:AmountOfRegulatoryAssistanceReceived1 |
| Documentation: | Amount of regulatory assistance received from a federal regulatory agency in conjunction with either an acquisition of a troubled financial institution, transfer of nonperforming assets to a newly-formed entity, or other reorganization. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:AmountOfRegulatoryAssistanceReceived1 |
| Label | Role | Language |
| Amount of Regulatory Assistance Received | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 942 10 S99 5 (SAB TOPIC 11.N) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |