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Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Gross Profit (Loss) by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Statistics [Line Items]
Gross profit	$ 61,958	$ 76,516	$ 116,660	$ 160,307
Advanced Manufacturing Capital Equipment [Member]
Operating Statistics [Line Items]
Gross profit	43,660	48,858	78,496	106,695
Analytical Solutions Group [Member]
Operating Statistics [Line Items]
Gross profit	7,033	8,284	14,481	16,384
Europe Region Sales & Service Operations [Member]
Operating Statistics [Line Items]
Gross profit	3,387	3,742	6,578	7,745
Asia Region Sales & Service Operations [Member]
Operating Statistics [Line Items]
Gross profit	10,954	11,851	19,786	19,113
Corporate, Eliminations and Other [Member]
Operating Statistics [Line Items]
Gross profit	$ (3,076)	$ 3,781	$ (2,681)	$ 10,370

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ 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 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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