PROPERTY, PLANT AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Total cost	$ 480,072		$ 482,682
Less: Accumulated depreciation	(287,193)		(275,976)
Total net book value	192,879	[1]	206,706	[1]	198,312	217,367
Assets held under capital leases (included in the above)	7,990		9,834
Less: Accumulated depreciation	(3,270)		(3,077)
Total net book value	4,720		6,757
Land and buildings [Member]
Property, Plant and Equipment [Line Items]
Total cost	161,557		164,395
Assets held under capital leases (included in the above)	4,623		6,042
Machinery, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	212,057		215,776
Assets held under capital leases (included in the above)	3,367		3,792
Other equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	42,156		38,091
Software licenses [Member]
Property, Plant and Equipment [Line Items]
Total cost	51,294		49,466
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 13,008		$ 14,954

[1] Reflects property, plant and equipment.