cm:Level2TextBlock: us-gaap:DepreciationDepletionAndAmortizationPolicyTextBlock
Depreciation, Depletion, and Amortization [Policy Text Block] |
us-gaap:DepreciationDepletionAndAmortizationPolicyTextBlock |
Disclosure of accounting policy for depreciation, depletion, and amortization of property and equipment costs, including methods used and estimated useful lives and how impairment of such assets is assessed and recognized. |
cm:Level2TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:DepreciationDepletionAndAmortizationPolicyTextBlock |