Business Acquisition - Acquisition and Integration Expenses (Details) - TVN [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 01, 2016	Jul. 01, 2016
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	$ 885	$ 3,321
Business Combination, Integration Related Costs	2,518	3,178
Cost of Goods, Product Line [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	0	0
Business Combination, Integration Related Costs	433	491
Research and Development Expense [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	0	0
Business Combination, Integration Related Costs	500	550
Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	885	3,321
Business Combination, Integration Related Costs	1,585	2,137
Operating Expense [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	885	3,321
Business Combination, Integration Related Costs	$ 2,085	$ 2,687