cm:Concept: us-gaap:IncreaseDecreaseInInsuranceSettlementsReceivable
| Increase (Decrease) in Insurance Settlements Receivable |
| us-gaap:IncreaseDecreaseInInsuranceSettlementsReceivable |
| The increase (decrease) during the reporting period in insurance settlements receivable, which are amounts due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. The expectation is that such reimbursement will be received within one year of the balance sheet date. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Credit |
| false |
| us-gaap:IncreaseDecreaseInInsuranceSettlementsReceivable |