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Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Gross Profit by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Gross profit	$ 79,635	$ 61,958	$ 169,007	$ 116,660
Operating Segments [Member] | Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Gross profit	61,548	43,660	129,162	78,496
Operating Segments [Member] | Analytical Solutions Group [Member]
Segment Reporting Information [Line Items]
Gross profit	7,853	7,033	14,399	14,481
Operating Segments [Member] | Europe Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Gross profit	3,622	3,387	7,861	6,578
Operating Segments [Member] | Asia Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Gross profit	9,641	10,954	22,665	19,786
Corporate, Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Gross profit	$ (3,029)	$ (3,076)	$ (5,080)	$ (2,681)

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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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration