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
	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