| Standard label: | Loans and Leases Receivable, Gross |
| Name: | us-gaap:LoansAndLeasesReceivableGrossCarryingAmount |
| Documentation: | Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LoansAndLeasesReceivableGrossCarryingAmount |
| Label | Role | Language |
| Loans and Leases Receivable, Gross | http://www.xbrl.org/2003/role/label | en-US |
| Loans and Leases Receivable, Gross, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 310 10 45 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |