cm:Member: us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain
| Supplier [Domain] |
| us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain |
| Specific identification or general nature of (for example, a construction contractor, a consulting firm) the party from whom the goods or services were or are to be received. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain |