cm:Level2TextBlock: us-gaap:CostOfSalesVendorAllowancesPolicy
| Cost of Sales, Vendor Allowances, Policy [Policy Text Block] |
| us-gaap:CostOfSalesVendorAllowancesPolicy |
| Disclosure of accounting policy for allowances received from a vendor. The disclosure differentiates between those allowances that are recorded as a reduction in the price of the vendors' products or services (that is, the entity's inventory) and which ultimately will be recorded as a reduction in the entity's cost of sales and those that are not. |
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| us-gaap:CostOfSalesVendorAllowancesPolicy |