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Selected Segment Financial Data, Revenues and Income (Loss) Before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Revenues	$ 155,062	$ 112,149	$ 442,484	$ 330,058
Income (loss) before income taxes	4,480	11,021	(8,743)	28,316
Americas
Segment Reporting Information [Line Items]
Revenues	87,766	59,845	243,673	170,149
Income (loss) before income taxes	17,009	19,407	47,826	47,098
EMEA
Segment Reporting Information [Line Items]
Revenues	42,844	38,608	137,252	122,629
Income (loss) before income taxes	13,170	8,997	36,672	30,541
Asia /Pacific
Segment Reporting Information [Line Items]
Revenues	24,452	13,696	61,558	37,280
Income (loss) before income taxes	7,215	2,664	14,977	2,710
Corporate
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (32,914)	$ (20,047)	$ (108,218)	$ (52,033)

X

- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 1(i)

-Article 4

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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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