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Changes in Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 03, 2016 | Dec. 31, 2015
Goodwill [Line Items] |  |
Foreign currency translation adjustment | $ 7,458 |
Goodwill | 1,003,491 | $ 996,033
Accumulated impairment losses | (507,620) | (507,620)
Goodwill | 495,871 | 488,413
Semiconductor Test |  |
Goodwill [Line Items] |  |
Goodwill | 260,540 | 260,540
Accumulated impairment losses | (260,540) | (260,540)
Industrial Automation |  |
Goodwill [Line Items] |  |
Foreign currency translation adjustment | 7,458 |
Goodwill | 222,433 | 214,975
Goodwill | 222,433 | 214,975
System Test |  |
Goodwill [Line Items] |  |
Goodwill | 158,699 | 158,699
Accumulated impairment losses | (148,183) | (148,183)
Goodwill | 10,516 | 10,516
Wireless Test |  |
Goodwill [Line Items] |  |
Goodwill | 361,819 | 361,819
Accumulated impairment losses | (98,897) | (98,897)
Goodwill | $ 262,922 | $ 262,922

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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