cm:Concept: us-gaap:AccountsPayableUnderwritersPromotersAndEmployeesOtherThanSalariesAndWagesCurrent
| Accounts Payable, Underwriters, Promoters, and Employees, Current |
| us-gaap:AccountsPayableUnderwritersPromotersAndEmployeesOtherThanSalariesAndWagesCurrent |
| Amount of obligation to underwriters, promoters, and employees excluding salaries, wages and amount to related party, classified as current. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Credit |
| false |
| us-gaap:AccountsPayableUnderwritersPromotersAndEmployeesOtherThanSalariesAndWagesCurrent |