Operating Segments - Operating Segment Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 600,891	$ 529,491	$ 1,088,581	$ 1,036,964
Operating income (loss)	12,326	53,913	61,837	98,153
Total assets	3,050,386		3,050,386		2,751,753
All Other [Member]
Segment Reporting Information [Line Items]
Operating income (loss)		1,278		1,278
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues	600,891	529,491	1,088,581	1,036,964
Affiliate revenues	2,203	3,510	5,836	6,483
Operating income (loss)	11,772	53,027	61,405	95,682
Total assets	1,010,546	848,121	1,010,546	848,121
Broadcast Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	248,115	166,551	413,983	322,137
Affiliate revenues	84	526	283	636
Operating income (loss)	(26,302)	3,505	(15,734)	3,359
Total assets	419,814	272,506	419,814	272,506
Enterprise Connectivity Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	121,272	132,929	229,666	249,556
Affiliate revenues	1,628	2,539	3,704	5,008
Operating income (loss)	13,733	14,675	23,901	23,510
Total assets	236,860	242,120	236,860	242,120
Industrial Connectivity Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	178,244	171,892	337,562	348,613
Affiliate revenues	485	415	1,841	779
Operating income (loss)	18,339	24,344	39,089	48,793
Total assets	282,874	272,974	282,874	272,974
Industrial IT Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	53,260	58,119	107,370	116,658
Affiliate revenues	6	30	8	60
Operating income (loss)	6,002	9,225	14,149	18,742
Total assets	$ 70,998	$ 60,521	$ 70,998	$ 60,521