| Standard label: | Loans and Leases Receivable, Related Parties, Description |
| Name: | us-gaap:LoansAndLeasesReceivableRelatedPartiesDescription |
| Documentation: | Describes transactions with related parties, including directors, officers and key employees, including: (1) the aggregate amount of related party loans if they exceed 5 percent of shareholders' equity at the balance sheet date or at any time during the latest fiscal year, (2) an analysis of activity with respect to such loans for the latest fiscal year (i.e., beginning balance, new loans, repayments, other changes and ending balance), (3) the aggregate amount of any significant nonaccrual of interest, past due amounts, or restructured or potential problem (including additional information necessary to understand the impact on the financial statements), and (4) any related party loans not made in the ordinary course of business. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LoansAndLeasesReceivableRelatedPartiesDescription |
| Label | Role | Language |
| Loans and Leases Receivable, Related Parties, Description | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 235 10 S99 1 (SX 210.4-08.(k)) | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |
| FASB Accounting Standards Codification 850 10 50 1 (d) | http://fasb.org/us-gaap/role/ref/legacyRef | 850 |
| FASB Accounting Standards Codification 942 210 S99 1 (SX 210.9-03.7(e)) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |