PROPERTY, PLANT AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Total cost	$ 509,089		$ 503,198
Less: Accumulated depreciation	(314,505)		(304,852)
Total net book value	194,584	[1]	198,346	[1]	193,412	206,406
Assets held under capital leases (included in the above)	9,702		9,610
Less: Accumulated depreciation	(3,987)		(3,817)
Total net book value	5,715		5,793
Land and buildings [Member]
Property, Plant and Equipment [Line Items]
Total cost	176,356		174,144
Assets held under capital leases (included in the above)	4,770		4,778
Machinery, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	217,665		214,069
Assets held under capital leases (included in the above)	4,932		4,832
Other equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	43,205		42,920
Software licenses [Member]
Property, Plant and Equipment [Line Items]
Total cost	62,269		60,228
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 9,594		$ 11,837

[1] Reflects property, plant and equipment.