GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill by Reportable Business Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill gross value		$ 390,196
Accumulated impairment losses		(92,423)
Goodwill carrying value at December 31, 2012	297,773
Impact of currency fluctuations	(1,402)
Carrying value at March 31, 2013	296,371
North America [Member]
Goodwill [Line Items]
Goodwill gross value		364,563
Accumulated impairment losses		(92,423)
Goodwill carrying value at December 31, 2012	272,140
Impact of currency fluctuations	(538)
Carrying value at March 31, 2013	271,602
Europe [Member]
Goodwill [Line Items]
Goodwill gross value		20,216
Accumulated impairment losses
Goodwill carrying value at December 31, 2012	20,216
Impact of currency fluctuations	(870)
Carrying value at March 31, 2013	19,346
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill gross value		5,417
Accumulated impairment losses
Goodwill carrying value at December 31, 2012	5,417
Impact of currency fluctuations	6
Carrying value at March 31, 2013	$ 5,423

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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