cm:Member: us-gaap:CreditAvailabilityConcentrationRiskMember
| Credit Availability Concentration Risk [Member] |
| us-gaap:CreditAvailabilityConcentrationRiskMember |
| Reflects the percentage that borrowing or credit line availability under commitments from one or more lenders is to a selected benchmark, such as total debt, segment debt. Risk is the materially adverse effects that funds which may be needed for operations or for a specific purpose will not be available on terms that are acceptable to an entity, if at all. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:CreditAvailabilityConcentrationRiskMember |