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Severance, Restructuring and Acquisition Integration Activities - Summary of Significant Severance Activity (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2016 | Apr. 03, 2016 | Jun. 28, 2015 | Jul. 03, 2016 | Jun. 28, 2015
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance, restructuring, and acquisition integration costs | $ 5,869 |  | $ 4,907 | $ 14,277 | $ 19,390
Grass Valley Restructuring Program [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance, restructuring, and acquisition integration costs | 900 |  |  | 5,000 |
Industrial Restructuring Program [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance, restructuring, and acquisition integration costs | 2,400 |  |  | 5,800 |
Employee Severance [Member] | Grass Valley Restructuring Program [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Beginning balance | 7,197 | $ 12,076 |  | 12,076 |
Severance, restructuring, and acquisition integration costs | 251 | 886 |  |  |
Cash payments | (3,356) | (4,404) |  |  |
Foreign currency translation | (13) | 167 |  |  |
Other adjustments | (360) | (1,528) |  |  |
Ending balance | 3,719 | 7,197 |  | 3,719 |
Employee Severance [Member] | Industrial Restructuring Program [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Beginning balance | 3,993 | 2,947 |  | 2,947 |
Severance, restructuring, and acquisition integration costs | 1,489 | 2,919 |  |  |
Cash payments | (1,685) | (1,967) |  |  |
Foreign currency translation | (42) | 94 |  |  |
Ending balance | $ 3,755 | $ 3,993 |  | $ 3,755 |

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