cm:Concept: us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories
       
          
          | Increase (Decrease) in Raw Materials, Packaging Materials and Supplies Inventories | 
       
       
          
          | us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories | 
       
       
          
          | The increase (decrease) during the reporting period in the value of raw materials, packaging materials and supplies held in inventory. | 
       
       
          
          | cm:Concept | 
       
       
          
          | Monetary (xbrli:monetaryItemType) | 
       
       
          
          | For Period (duration) | 
       
       
          
          | Credit | 
       
       
          
          | false | 
       
       
          
          | us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories |