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Severance, Restructuring and Acquisition Integration Activities - Summary of Severance Activity (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Oct. 02, 2016 USD ($) | Jul. 03, 2016 USD ($) | Apr. 03, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 27, 2015 USD ($) | Jun. 28, 2015 USD ($) | Mar. 29, 2015 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) Program | Dec. 31, 2014 USD ($)
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges | $ 11,700 | $ 12,800 | $ 5,900 | $ 8,400 | $ 13,600 | $ 14,100 | $ 4,900 | $ 14,600 | $ 38,770 | $ 47,170 | $ 70,827
Grass Valley Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | 8,700 | 25,400 |
Savings From Restructuring |  |  |  |  | 30,000 |  |  |  |  |  |
Industrial Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | 9,700 | 3,300 |
Expected Savings From Restructuring |  |  |  | 18,000 |  |  |  |  |  |  |
Productivity Improvement Program and Acquisition Integration [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  |  | $ 18,500 |
Number Of Restructuring Programs | Program |  |  |  |  |  |  |  |  |  | 2 |
Reduction In Operating Expenses |  |  |  |  |  |  |  |  | 18,000 |  |
Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance Costs |  |  |  |  |  |  |  |  | 7,082 | $ 19,101 | 37,254
Employee Severance [Member] | Grass Valley Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance | 1,692 | 3,719 | 7,197 | 12,076 |  |  |  |  | 12,076 |  |
New charges | 749 | 148 | 251 | 886 |  |  |  |  |  |  |
Cash payments | (829) | (1,945) | (3,356) | (4,404) |  |  |  |  |  |  |
Foreign currency translation | (90) | 32 | (13) | 167 |  |  |  |  |  |  |
Other adjustments |  | (262) | (360) | (1,528) |  |  |  |  |  |  |
Ending balance | 1,522 | 1,692 | 3,719 | 7,197 | 12,076 |  |  |  | 1,522 | 12,076 |
Employee Severance [Member] | Industrial Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance | 4,350 | 3,755 | 3,993 | 2,947 |  |  |  |  | 2,947 |  |
New charges | 885 | 1,287 | 1,489 | 2,919 |  |  |  |  |  |  |
Cash payments | (645) | (743) | (1,685) | (1,967) |  |  |  |  |  |  |
Foreign currency translation | (259) | 51 | (42) | 94 |  |  |  |  |  |  |
Other adjustments |  | 0 | 0 | 0 |  |  |  |  |  |  |
Ending balance | $ 4,331 | $ 4,350 | $ 3,755 | $ 3,993 | $ 2,947 |  |  |  | 4,331 | 2,947 |
Other Than Severance Costs Restructuring And Integration Costs [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 31,688 | 28,069 | 33,573
Broadcast Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | 10,414 | 39,078 | 48,557
Broadcast Solutions [Member] | Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance Costs |  |  |  |  |  |  |  |  | (116) | 16,694 | 20,025
Broadcast Solutions [Member] | Other Than Severance Costs Restructuring And Integration Costs [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 10,530 | 22,384 | 28,532
Enterprise Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | 11,962 | 723 | 3,318
Enterprise Solutions [Member] | Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance Costs |  |  |  |  |  |  |  |  | 636 | (186) | 2,183
Enterprise Solutions [Member] | Other Than Severance Costs Restructuring And Integration Costs [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 11,326 | 909 | 1,135
Industrial Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | 9,923 | 6,228 | 11,953
Industrial Solutions [Member] | Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance Costs |  |  |  |  |  |  |  |  | 2,828 | 3,309 | 9,732
Industrial Solutions [Member] | Other Than Severance Costs Restructuring And Integration Costs [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | 7,095 | 2,919 | 2,221
Network Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | 6,471 | 1,141 | 6,999
Network Solutions [Member] | Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance Costs |  |  |  |  |  |  |  |  | 3,734 | (716) | 5,314
Network Solutions [Member] | Other Than Severance Costs Restructuring And Integration Costs [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Restructuring Costs |  |  |  |  |  |  |  |  | $ 2,737 | $ 1,857 | $ 1,685
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restructuring And Integration Cost Payable Period |  |  |  |  |  |  |  |  | 60 days |  |
M2 FX Limited [Member] | Productivity Improvement Program and Acquisition Integration [Member] |  |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
New charges |  |  |  |  |  |  |  |  | $ 2,600 |  |

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