| Standard label: | Loans and Leases Receivable, Net of Deferred Income |
| Name: | us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome |
| Documentation: | Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. 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:LoansAndLeasesReceivableNetOfDeferredIncome |
| Label | Role | Language |
| Loans and Leases Receivable, Net of Deferred Income | http://www.xbrl.org/2003/role/label | en-US |
| Loans and Leases Receivable, Net of Deferred Income, 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 |
| FASB Accounting Standards Codification 310 10 50 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |