cm:Level3TextBlock: us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock |
Tabular disclosure of the changes in outstanding nonvested restricted stock units. |
cm:Level3TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock |
NonvestedRestrictedStockUnitsActivity |