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 |