cm:Concept: us-gaap:ResearchAndDevelopmentArrangementWithFederalGovernmentCostsIncurredNet
| Research and Development Arrangement with Federal Government, Costs Incurred, Net |
| us-gaap:ResearchAndDevelopmentArrangementWithFederalGovernmentCostsIncurredNet |
| The net amount of research and development costs incurred for a fixed-price, best-efforts research and development cost-sharing arrangement with the Federal Government. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Debit |
| false |
| us-gaap:ResearchAndDevelopmentArrangementWithFederalGovernmentCostsIncurredNet |