cm:Member: us-gaap:UnusualRiskOrUncertaintyNatureDomain
| Unusual Risk or Uncertainty, Nature [Domain] |
| us-gaap:UnusualRiskOrUncertaintyNatureDomain |
| Describes the nature of the unusual risk or uncertainty, such as the threat of expropriation of its assets by a foreign government, rapid technological obsolescence in the industry, risk of natural disaster from earthquake or weather events, and availability of or continuation of a labor force at a reasonable cost. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:UnusualRiskOrUncertaintyNatureDomain |