cm:Concept: us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease
| Interest Expense, Lessee, Assets under Capital Lease |
| us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease |
| The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Debit |
| false |
| us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease |