cm:Concept: us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardMethodOfMeasuringCostOfAward
Share-based Compensation Arrangement by Share-based Payment Award, Method of Measuring Cost of Award |
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardMethodOfMeasuringCostOfAward |
Description of method used for measuring cost of award under share-based payment arrangement. |
cm:Concept |
Text/String (xbrli:stringItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardMethodOfMeasuringCostOfAward |