Long-Lived Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Proceeds from sale of PP&E, including real estate			$ 3,136,000	$ 353,000
Depreciation expense	12,100,000	8,600,000	21,700,000	17,300,000
Accelerated depreciation	2,700,000		2,700,000
Amortization of intangibles	13,105,000	2,415,000	26,082,000	5,499,000
Consumer Electronics [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Gain or loss on the sale of the consumer electronic assets	1,300,000		1,300,000
Broadcast Solutions [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Proceeds from sale of PP&E, including real estate			1,000,000
Gain or loss recognized on the sale			300,000
Enterprise Solutions [Member]
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]
Proceeds from sale of PP&E, including real estate			2,100,000
Gain or loss recognized on the sale			$ 0