cm:Concept: us-gaap:ConvertibleSubordinatedDebtNoncurrent
| Convertible Subordinated Debt, Noncurrent |
| us-gaap:ConvertibleSubordinatedDebtNoncurrent |
| The portion of the carrying value of convertible subordinated debt as of the balance sheet date that is scheduled to be repaid after one year or beyond the normal operating cycle if longer. This form of debt can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder, and places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Credit |
| false |
| us-gaap:ConvertibleSubordinatedDebtNoncurrent |