cm:Concept: us-gaap:ConvertibleLongTermNotesPayable
| Convertible Notes Payable, Noncurrent |
| us-gaap:ConvertibleLongTermNotesPayable |
| Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Credit |
| false |
| us-gaap:ConvertibleLongTermNotesPayable |