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PROPERTY, PLANT AND EQUIPMENT Rollforward (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Movement in Property, Plant and Equipment [Roll Forward]    
Opening Balance $ 217,367 $ 250,902
Cash additions 21,381 22,788
Disposals (22) (3,511)
Depreciation (32,175) (40,985)
Other Movements (1,147) (2,041)
Ending Balance 203,192 231,264
Foreign Currency Translation Movements [Member]
   
Movement in Property, Plant and Equipment [Roll Forward]    
Foreign currency movements $ (2,212) $ 4,111