cm:Concept: us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
| Class of Warrant or Right, Number of Securities Called by Each Warrant or Right |
| us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight |
| Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. |
| cm:Concept |
| Shares (xbrli:sharesItemType) |
| As Of (instant) |
| (no balance type) |
| false |
| us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight |