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Severance, Restructuring, and Acquisition Integration Activities Severance, Restructuring, and Acquisition Integration Activities - Severance, Restructuring and Integration Costs by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2017 | Oct. 01, 2017 | Jul. 02, 2017 | Apr. 02, 2017 | Dec. 31, 2016 | Oct. 02, 2016 | Jul. 03, 2016 | Apr. 03, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | $ 5,211 | $ 7,082 | $ 19,101
Other Restructuring and Integration Costs |  |  |  |  |  |  |  |  | 37,579 | 31,688 | 28,069
Total Costs | $ 9,900 | $ 16,700 | $ 9,600 | $ 6,600 | $ 11,700 | $ 12,800 | $ 5,900 | $ 8,400 | 42,790 | 38,770 | 47,170
Broadcast Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 893 | (116) | 16,694
Other Restructuring and Integration Costs |  |  |  |  |  |  |  |  | 4,639 | 10,530 | 22,384
Total Costs |  |  |  |  |  |  |  |  | 5,532 | 10,414 | 39,078
Enterprise Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 3,642 | 636 | (186)
Other Restructuring and Integration Costs |  |  |  |  |  |  |  |  | 19,869 | 11,326 | 909
Total Costs |  |  |  |  |  |  |  |  | 23,511 | 11,962 | 723
Industrial Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | 886 | 2,828 | 3,309
Other Restructuring and Integration Costs |  |  |  |  |  |  |  |  | 11,386 | 7,095 | 2,919
Total Costs |  |  |  |  |  |  |  |  | 12,272 | 9,923 | 6,228
Network Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance |  |  |  |  |  |  |  |  | (210) | 3,734 | (716)
Other Restructuring and Integration Costs |  |  |  |  |  |  |  |  | 1,685 | 2,737 | 1,857
Total Costs |  |  |  |  |  |  |  |  | $ 1,475 | $ 6,471 | $ 1,141

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