cm:Level2TextBlock: us-gaap:RevenueRecognitionAccountingPolicyGrossAndNetRevenueDisclosure
Revenue Recognition Accounting Policy, Gross and Net Revenue Disclosure [Policy Text Block] |
us-gaap:RevenueRecognitionAccountingPolicyGrossAndNetRevenueDisclosure |
Disclosure of accounting policy for recognizing revenue from a transaction on a gross or net basis. |
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us-gaap:RevenueRecognitionAccountingPolicyGrossAndNetRevenueDisclosure |