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Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Capital Expenditures, Depreciation and Amortization Expense by Reportable Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | $ 3,497 | $ 2,107 | $ 8,831 | $ 9,362
Depreciation and amortization | 5,524 | 5,792 | 16,606 | 14,757
Operating Segments [Member] | Advanced Manufacturing Capital Equipment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 2,169 | 1,239 | 5,313 | 4,944
Depreciation and amortization | 4,240 | 4,403 | 12,792 | 10,857
Operating Segments [Member] | Global Service [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 265 | 198 | 550 | 787
Depreciation and amortization | 249 | 280 | 759 | 819
Operating Segments [Member] | Asia Region Sales [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 256 | 229 | 349 | 421
Depreciation and amortization | 86 | 101 | 259 | 301
Operating Segments [Member] | Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 150 | 63 | 386 | 1,600
Depreciation and amortization | 268 | 307 | 846 | 766
Corporate and Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 657 | 378 | 2,233 | 1,610
Depreciation and amortization | $ 681 | $ 701 | $ 1,950 | $ 2,014

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