GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill by Reportable Business Segment) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Dec. 31, 2011
Goodwill [Line Items]
Goodwill gross value		$ 388,113
Accumulated impairment losses		(92,423)
Goodwill carrying value at December 31, 2011	295,690
Impact of currency fluctuations	1,746
Goodwill carrying value at September 30, 2012	297,436
North America [Member]
Goodwill [Line Items]
Goodwill gross value		363,953
Accumulated impairment losses		(92,423)
Goodwill carrying value at December 31, 2011	271,530
Impact of currency fluctuations	816
Goodwill carrying value at September 30, 2012	272,346
Europe [Member]
Goodwill [Line Items]
Goodwill gross value		18,856
Accumulated impairment losses
Goodwill carrying value at December 31, 2011	18,856
Impact of currency fluctuations	826
Goodwill carrying value at September 30, 2012	19,682
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill gross value		5,304
Accumulated impairment losses
Goodwill carrying value at December 31, 2011	5,304
Impact of currency fluctuations	104
Goodwill carrying value at September 30, 2012	$ 5,408

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 2: http://www.xbrl.org/2003/role/presentationRef

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 45

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-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

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