PROPERTY, PLANT AND EQUIPMENT Rollforward (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Movement in Property, Plant and Equipment [Roll Forward]
Opening balance	$ 206,706	[1]	$ 217,367
Cash additions	10,230		7,339
Disposals	(51)		(279)
Depreciation	(10,234)		(11,880)
Other movements	(6,228)		383
Ending balance	193,650	[1]	219,877
Foreign Currency Translation Movements [Member]
Movement in Property, Plant and Equipment [Roll Forward]
Foreign currency movements	$ (6,773)		$ 6,947

[1] Reflects property, plant and equipment.