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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
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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 + Details
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