cm:Table: us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable
| Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table] |
| us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable |
| Schedule of information about a contingent payment arrangement including the terms that will result in payment and the accounting treatment that will be followed if such contingency occurs, including the potential impact on earnings per share if the contingency is to be settled in shares of common stock of the entity. The description also may include the period over which amounts are expected to be paid, and changes in the amount since the previous reporting period. This also includes contingent options and commitments. |
| cm:Table |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable |