cm:Member: us-gaap:OperatingAndBroadcastRightsMember
| Operating and Broadcast Rights [Member] |
| us-gaap:OperatingAndBroadcastRightsMember |
| Legal claim or title to operate as a broadcaster and broadcast radio or television signals on a particular spectrum of airwave. Broadcast rights may also refer to the license granted to televise a particular event, such as a sporting event. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:OperatingAndBroadcastRightsMember |