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Business Segment, Geographic Area, Product and Significant Customer Information - Net Revenues 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] |  |  |  |
Total net revenues | $ 156,928 | $ 177,397 | $ 298,573 | $ 368,265
Advanced Manufacturing Capital Equipment [Member] |  |  |  |
Operating Statistics [Line Items] |  |  |  |
Total net revenues | 124,876 | 134,601 | 230,205 | 277,824
Analytical Solutions Group [Member] |  |  |  |
Operating Statistics [Line Items] |  |  |  |
Total net revenues | 13,508 | 16,727 | 27,904 | 32,521
Europe Region Sales & Service Operations [Member] |  |  |  |
Operating Statistics [Line Items] |  |  |  |
Total net revenues | 11,803 | 12,449 | 22,851 | 24,656
Asia Region Sales & Service Operations [Member] |  |  |  |
Operating Statistics [Line Items] |  |  |  |
Total net revenues | 49,566 | 63,783 | 96,709 | 135,882
Corporate, Eliminations and Other [Member] |  |  |  |
Operating Statistics [Line Items] |  |  |  |
Total net revenues | $ (42,825) | $ (50,163) | $ (79,096) | $ (102,618)

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- 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=26872669&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 + Details
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