cm:Level3TextBlock: us-gaap:DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock
| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
| us-gaap:DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock |
| Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. |
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| Text Block (HTML) (nonnum:textBlockItemType) |
| For Period (duration) |
| (no balance type) |
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| us-gaap:DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock |
| DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosure |