cm:Member: us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember
Supplemental Employee Retirement Plan [Member] |
us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Plan designed to provide limited group of employees with supplemental retirement benefits, in addition to other pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans. |
cm:Member |
[Member] (nonnum:domainItemType) |
For Period (duration) |
(no balance type) |
true |
us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember |