cm:Level2TextBlock: us-gaap:CooperativeAdvertisingPolicy
| Cooperative Advertising Policy [Policy Text Block] |
| us-gaap:CooperativeAdvertisingPolicy |
| Disclosure of accounting policy for offsetting cash consideration received from a vendor arising from cooperative advertising arrangements against advertising expense when such consideration represents a reimbursement of a specific, incremental, identifiable cost incurred by the entity in selling the vendor's products or services. |
| cm:Level2TextBlock |
| Text Block (HTML) (nonnum:textBlockItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:CooperativeAdvertisingPolicy |