cm:Concept: us-gaap:CompensationExpenseExcludingCostOfGoodAndServiceSold
| Compensation Expense, Excluding Cost of Good and Service Sold |
| us-gaap:CompensationExpenseExcludingCostOfGoodAndServiceSold |
| Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Other employee benefit expense includes, but is not limited to, service component of net periodic benefit cost for defined benefit plan. Excludes compensation cost in cost of good and service sold. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Debit |
| false |
| us-gaap:CompensationExpenseExcludingCostOfGoodAndServiceSold |