cm:Concept: us-gaap:ConcentrationRiskLicense
| Concentration Risk, License |
| us-gaap:ConcentrationRiskLicense |
| Description of risks that arise due to the entity's reliance on a particular license, either as licensee or licensor, in its operations and the characteristics of that license that may give rise to the risk, for example the license expiration date. At a minimum, the description informs financial statement users of the general nature of the risk. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:ConcentrationRiskLicense |