Operating Segments - Operating Segment Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 487,690	$ 507,473
Operating income (loss)	49,511	44,240
Total assets	2,714,281		2,751,753
Broadcast Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	165,868	155,586
Affiliate revenues	199	109
Operating income (loss)	10,568	(146)
Total assets	292,690	273,459
Enterprise Connectivity Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	108,394	116,627
Affiliate revenues	2,076	2,469
Operating income (loss)	10,168	8,835
Total assets	228,401	233,521
Industrial Connectivity Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	159,318	176,721
Affiliate revenues	1,356	364
Operating income (loss)	20,750	24,449
Total assets	270,295	271,869
Industrial IT Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	54,110	58,539
Affiliate revenues	2	30
Operating income (loss)	8,147	9,517
Total assets	61,001	57,793
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues	487,690	507,473
Affiliate revenues	3,633	2,972
Operating income (loss)	49,633	42,655
Total assets	$ 852,387	$ 836,642